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<title cf:type="text"><![CDATA[Editorial department of the Journal of National University of Defense Technology -->Physics]]></title>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Study of the Relations Between Refractive Index and Porosity in Mixed Films by Coevaporation]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to further understand the relations between refractive index and porosity in mixed films，We did the experiments of mixed    film system TiO<sub>2</sub>:Ta<sub>2</sub>O<sub>5</sub>, using coevaporation. On the basis of our experimental results，we
put forward an empirical porosity expression to fit the data of TiO<sub>2</sub>:Ta<sub>2</sub>O<sub>5</sub> system，and we also  improved the calculating procedure of the refractive index of mixed films. The results of theoretical calculations using our    empirical porosity expression agree with those of experiments. The results of experiments and theoretical analysis show that it is  possible that the mixed films have less porosity than pure thin films，and those films cause a peak in the curve of refractive index  of mixed films versus the ratio of the mixed weight.]]></description>
<pubDate>2015/7/4 9:18:03</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Chen Zhe, Gao Bolong, Shi Xiuyu and Wang Jiwu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Chen Zhe, Gao Bolong, Shi Xiuyu and Wang Jiwu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001008]]></guid><cfi:id>152</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Treatment of the‘ill-state' of the Optimization Process for the Program of Adaptive Optical Automatic Design]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001009]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The effective treatment of the‘il1-state' is a key to the design of the program of adaptive optical automatic design. The paper  proposes a new idea and method about it. The so-called‘three link-closed chain-circulating treating method' has been put forward  here. The treating method consists of reducing iteration step，regulating the rate between the increments of variables，and releasing  control1ed aberration. This is much better than the tradtional treatment setup.]]></description>
<pubDate>2015/7/4 9:18:04</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Wang Yongzhong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Wang Yongzhong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001009]]></guid><cfi:id>151</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Small-sized H. V. Nanosecond Pulse Generator & its Applications]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001010]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[This paper discusses a small-sized H.V. nanosecond pulse generator which can produce a H.V. pulse with 120kV amplitude，more than    5kV/ns front gradient and 100 ns width. The generator has been used as a trigger to REB accelerator，the pulse resource of H.V. EMP    simulator and the energy resource for studying discharge properties of different mediums，as well.]]></description>
<pubDate>2015/7/4 9:18:04</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Zhong Huihuang, Shen Longgen, Li Chuanlu and Liu Cunhua]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Zhong Huihuang, Shen Longgen, Li Chuanlu and Liu Cunhua</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001010]]></guid><cfi:id>150</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Experimental Research on Breakdown Properties of Water Dielectric Switching under Nanosecond Positive Pulse Voltage]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[This research is a continuation of our experimental research on the breakdown properties of water dielectric switching under submicrosecond negative pulse voltage<sup>[1]</sup>. The conclusions show that it is necessary to consider the leakage of the wave   impedance of the water capacitance between electrods to pulse energy of the trigger when the nanosecond pulse breakdown experiment is carried out.]]></description>
<pubDate>2015/7/4 9:18:04</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Li Xiangsheng and Liu Chebo]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Li Xiangsheng and Liu Chebo</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001011]]></guid><cfi:id>149</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Simplized Model of Two-Dimensional Projected Plate in Air]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001012]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In this paper，a simplized handling scheme with more general significance for the theoretical model of two-dimensional projected  plate in air driven by explosive has been proposed.]]></description>
<pubDate>2015/7/4 9:18:04</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Lü Hongsheng and Ling Keliang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Lü Hongsheng and Ling Keliang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001012]]></guid><cfi:id>148</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Similarity of the Limit Speed of Two-Dimensional Projected Plate and Adoption of the Gurney Formula]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001013]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The important factors to affect the limit speed of a projected plate driven by explosive are first analysed in this paper. This  analysis is combined with a discussion about the range of application of the empirical formulae. Then two important laws，which are   summarized from the results of the numerical computations to two-dimensional projected plate，are formulated: ①When mass ratios of  explosive and projected plate are the same，there is a certainly similar relation among limit speeds of two-dimensional projected  plate；② The revised Gurney Formula may be used to calculate the limit speed of two-dimensional projected plate.]]></description>
<pubDate>2015/7/4 9:18:04</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Lv Hongsheng, Jiang Bocheng and Ling Keliang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Lv Hongsheng, Jiang Bocheng and Ling Keliang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001013]]></guid><cfi:id>147</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Topological Entropy in Two-Dimensional Dissipative Maps]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001014]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In this paper，the topological entropy of two-dimensional dissipative maps from period doubling bifurcation or the same period   bifurcation to chaos is calculated. The arbitrary relation of bifurcational routes in dissipative maps and topological entropy  corresponding to these routes are found and the intrinsic relation between chaos and topological entropy is also revealed.]]></description>
<pubDate>2015/7/4 9:18:04</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Liu Wuming and Lan Maqun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Liu Wuming and Lan Maqun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001014]]></guid><cfi:id>146</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Practical Recursion Method to Calculate the Thermal Expansion Coefficient]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001015]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[From the thermodynamic relationship among the thermal expansion coefficient α，specific heat Cv，and volume elastic modulusk，We  proposed a simple practical recursion method to calculate the thermal expansion coefficient. The coefficient of thermal expansion of  solid，as the function of temperature，can be determined very accurately by this method. As an example We have calculated the thermal expansion coefficient of three alkali halide crystals below the room temperature，the results are in sound agreement with the experiments.]]></description>
<pubDate>2015/7/4 9:18:04</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Sun Fengguo and Yuan Jianmin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Sun Fengguo and Yuan Jianmin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001015]]></guid><cfi:id>145</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on the Atmospheric Transmission of the Laser]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In this paper; the influnces of the diffraction effects，atmospheric turbulence，the absorption and scattering losses from both     moleculae and aerosol particles in the atmosphere on the atmospheric transmission of the laser beam are considered together. The  methods of reducing these influnces are analysed. The conclusion on the transmission properties of the laser beam affected by the wavelength of the laser beam，the transmitting aperture，climatic condition and emission angle is found.]]></description>
<pubDate>2015/7/4 9:18:04</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Peng Jian and Zhao Yijun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Peng Jian and Zhao Yijun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199001016]]></guid><cfi:id>144</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Kinetic Theoretical Analysis of a Type of Slow Wave Free Electron Laser]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199104008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The characteristics of a slow wave free electron laser (FEL)，which is formed by filling dielectric medium in a retangular waveguide on one single side，is studied by kinetic coupling mode theory. Analyses show it is possible to produce high frequency free electron laser of high gain and good tunability by using a low energy electron beam.]]></description>
<pubDate>2015/7/4 9:19:34</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[He Yiping and Chen Deming]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>He Yiping and Chen Deming</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199104008]]></guid><cfi:id>143</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Working Characteristic Analysis of Peniotron Using a Rectangular Waveguide Structure]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199104009]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The dispersion equation of a peniotron using TE<sub>no</sub> mode in a rectangular waveguide strusture is derived in this paper. The  working conditions of the peniotron are investigated and a clearer explanation of the peniotron is made. Based on this，numerical  calcnlations of the dispersion equation of the peniotron using TE<sub>20</sub> mode are carried out to get the dispersion curves of the peniotron working at the fundamental and the third harmonic synchronous resonance. The curves show that the peniotron has 1.5%  growth rate at the fundamental and 0.8% average growth rate at the third harmonic resonance.Further more，the performance of peniotron  at the fundamental and the third harmonic resonance are analysed by nonlinear theory，which gives the electron distribution at efficiency saturation. Through large amount of computation，the optimum result is derived: peniotro has 51%high efficiency and  QPw=9949.94MW output power at the fundametal，and 11% efficiency and QPw=1741.8MW output power at the third harmonic resonance.]]></description>
<pubDate>2015/7/4 9:19:34</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Gong Jianmin<sup>1</sup>, Liu Shenggang<sup>1</sup> and He Yiping<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Gong Jianmin<sup>1</sup>, Liu Shenggang<sup>1</sup> and He Yiping<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199104009]]></guid><cfi:id>142</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Effect of Plasma Particle Simulation on Dispersion Relation and Soliton Motion]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199104011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A theoretical model is made to analyse the effects of finite-size particle，charge nearest grid sharing and time difference on the electrostatic dispersion relation of plasma. A modified dispersion relation is derived. The computer experimental scheme to simulate  the plasma particle is designed. The simulation result shows the effects of finite-size particle and time difference on dispersion  relation. Finally，completely different simulation results of plasma soliton with different particle size are presented. It indicates  that these effects may change the basic physical phenomena of the simulated results in some circumstances.]]></description>
<pubDate>2015/7/4 9:19:34</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Wang Min]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Wang Min</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199104011]]></guid><cfi:id>141</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Study on the Impedance Matching of Multi-layer Absorption Materials and Multi-layer Transmission Materials]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199104012]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[An example，the optimization of electromagnetic parameters for a special-structured electromagnetic wave absorber are computed by using multi-objective functions. Some parameters with absorptivities>20db with in 5～15GHz and the absorption curves of perpendicular and parallel polarization at incident angle 0°,20°, 45°and 60°corresponding to these parameters are given.It is proved that good absorption characteristics can be obtained even if some inserted layers' do not absorb，provided that the parameters for all layers are optimized. It is difficult to obtain high absorptivity by purely using electronic or magnetic absorber. “Gradual impedance transition” is not the only method  to get good electronic matching. For a transmission material with emergent side being “free space”，a good impedance matching can be obtained  only at ε<sub>r</sub>≈μ<sub>r</sub> when using materials do not possess absorbency.]]></description>
<pubDate>2015/7/4 9:19:33</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Li Chengzu and Tian Chenglin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Li Chengzu and Tian Chenglin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199104012]]></guid><cfi:id>140</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Studies of the Lepton Identification in BES—Monte Carlo Results]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199101001]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[This work is one of the series，which studies the lepton identification in the BES (Beijing Spectrometer) in detail. The preliminary M.C.   results about the discrimination between muon，electron and the other secondaries generated by hadron punch-through，especially by pion，are  reported. The results show that there are two efficient cuts，i.e. the total charge Q and the second moment S for the discriminating of  electron and pionin barrel shower counter，and there are also two cuts，i.e. position for direction for the discriminating of muon and pion in   muon-system of BES. Thus the BES is of the good ability for the lepton identification.]]></description>
<pubDate>2015/7/4 9:18:59</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Kong Linghua]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Kong Linghua</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199101001]]></guid><cfi:id>139</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Initial Parameter Computation of Detonation Wave Oblique Reflection on a Compressible Metal Plate]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199101002]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Initial parameters of detonation wave oblique reflection on a compressible metal plate have been computed in this paper. When the computation
is made, five kinds of explosives: TNT(ρ<sub>0</sub>:1.64g/cm<sup>3</sup>，1.45g/cm<sup>3</sup>),RDX (ρ<sub>0</sub>:1.59g/cm<sup>3</sup>，1.76g/cm<sup>3</sup>，1.80g/cm<sup>3</sup>)、RDX/TNT(77/23) (ρ<sub>0</sub>:1.75g/cm<sup>3</sup>),Pentolite (ρ<sub>0</sub> :1.65g/cm<sup>3</sup>，1.68g/cm<sup>3</sup> )and B explosive，and three kinds of media; Fe, Cu and Al are selected.]]></description>
<pubDate>2015/7/4 9:18:59</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Wang Chenghong<sup>1</sup>, Li Jian<sup>2</sup> and Wang Congbin<sup>3</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Wang Chenghong<sup>1</sup>, Li Jian<sup>2</sup> and Wang Congbin<sup>3</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199101002]]></guid><cfi:id>138</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Good Electromagnetic Particle Simulation Code of Plasmas]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199101003]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A multi-functional 1 2/2 D plasma simulation code is developed in this paper. The principles，methods and programming techniques are  described. Finally，the applications of the electromagnetic simulation is discussed.]]></description>
<pubDate>2015/7/4 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Chen Deming and Wang Min]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Chen Deming and Wang Min</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199101003]]></guid><cfi:id>137</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Calculation of Thermal Expansion Coefficients of KCl and KBr Crystals]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199101004]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Using the interaction potential between ions given by Gordon-Kim model，we calculated the thermal expansion coefficients of KCl and KBr crystals at room temperature，The results Were compared with experimental data.]]></description>
<pubDate>2015/7/4 9:18:59</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Hu Hongbo, Sun Fengguo and Yuan Jianmin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Hu Hongbo, Sun Fengguo and Yuan Jianmin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199101004]]></guid><cfi:id>136</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Using the Modified Transport Approximation Equation and Its Matched Neutron Group Constants to Calculate the Tritium Production Rate of Fast Neutrons in LID Spheres]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199204014]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Using the modified transport approximation，the authors calculated and obtained 18-group neutron constants. In this paper，the  authors try to examine the validity of these 18-group neutron constants by calculating the Tritium production rate of fast neutron in  LID spheres. The modified transport approximation equation and its matched 18-group neutron constants are used to calculate the  Tritium production rate of fast neutrons in two different models. The results are in good agreement with those obtaind by other authors using different transport equation and group constants，the relative errors are within 3%. The calculatied results and the  comparison show that the modified transport approximation equation and its matched 18-group neutron constants can be used to describe the transport behavior of fast neutrons in light material，and the 18-group neutron constants obtained by the authors are reliable  and rational.]]></description>
<pubDate>2015/7/4 9:20:30</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Wang Shangwu, Shen Yongping and Kuang Huisun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Wang Shangwu, Shen Yongping and Kuang Huisun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199204014]]></guid><cfi:id>135</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A New Method of ab Initio Calculation of Elastic Constant of Metal Aluminium]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199204015]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[We report in this paper the first principle calculation of elastic constants of metal aluminium using a model of cluster Al<sub>13</sub> with face-centered-cubic structure. Total energies of Al<sub>13</sub> are first calculated at various lattice spacings using the M<sub>s</sub>-X<sub>a</sub> method，after that total energies are fitted using morse potential function，the porameters of which are finally used to calculate the elastic constants of aluminium.The results are: C<sub>11</sub>=8.83×l0<sup>11</sup>     dyn/cm<sup>2</sup> and C<sub>12</sub>=6.73×10<sup>11</sup>dyn/cm<sup>2</sup>，which are in good agreement with ather theories and experiment.]]></description>
<pubDate>2015/7/4 9:20:31</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Zhang Yaping, Tang Rongqi and Zhao Yijun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Zhang Yaping, Tang Rongqi and Zhao Yijun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199204015]]></guid><cfi:id>134</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Dynamical Coefficients Used in Dynamical Simulation of Nuclear Fission Process]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199203017]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Based on three-parameter rotating body model，the relative surface energy，relative coulomb energy and relative rotating energy of deformed  nucleus are calculated. These relative energies are all independent of any certain nucleus they might belong to and have generality. They can be used in the calculation of dynamical simulation. According to these results，the deformation potential energies of some nuc1ei are calculated，the calculated fission barrier heights of some nuclei are in agreement with the experimental results. The deformation potential surface of <sup>236</sup>U is drawn and analysed in detail. In addition，the inertial mass and frictional tensors are calculated by means of Werner  Wheeler method. Finally，the scission point equation of the deformed nucleus is discussed.]]></description>
<pubDate>2015/7/4 9:20:19</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Xing Jingru and Wang Shangwu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Xing Jingru and Wang Shangwu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199203017]]></guid><cfi:id>133</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A New Measurement Method for Radial Distribution of REB Electron Energy]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199203018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[This paper provides a new measurement method for radial distribution of the REB electron energy. The zero angle measurement of the thick target bremsstrahlung produced by the REB bombarded anode target can be used to determine the electron energy radial  distribution, and to judge the REB medial property and the energy even distribution.]]></description>
<pubDate>2015/7/4 9:20:20</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Li Xiangsheng and Li Chuanlu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Li Xiangsheng and Li Chuanlu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199203018]]></guid><cfi:id>132</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[An Explanation to the Layer Property of High-Temperature Superconductivity]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199203021]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The layer theory of high-temperature superconductivity is developed based on quasi two-dimension of the structure of high-temperature superconductivity material. A quantitative relation between the critical temperature T<sub>c</sub> and the Cu-O plane quantity l is obtained. It is indicated that superconductivity material with high material density N<sub>i</sub><sup>0</sup> and high electron density N<sub>i</sub><sup>0</sup> may have high T<sub>c</sub>.]]></description>
<pubDate>2015/7/4 9:20:20</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Lu Yanwen]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Lu Yanwen</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199203021]]></guid><cfi:id>131</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis of High T<sub>c</sub> Infrared Superconducting Detector with Nernst Effect]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199304006]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The Nernst effect in a high T<sub>c</sub> Supeconducting thin film presents a new way of developing infrared detector. In this paper，the  principle of high T<sub>c</sub> superconducting infrared detector with Nernst effect is analysed and several noise sources is discussed.]]></description>
<pubDate>2015/1/23 11:00:09</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Li Shixiang<sup>1</sup> and Song Hongfa<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Li Shixiang<sup>1</sup> and Song Hongfa<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199304006]]></guid><cfi:id>130</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Effect of Non-equilibrium Relaxation Process of High-speed Nucleus in High Temperature Thermal Equilibrium Plasma on Fusion Reaction Rate Parameter]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199304007]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[When high-speed nucleus comes into high temperature thermal equilibrium plasma，there exists a non-equilibrium relaxation process before the  incident nucleus reaches a thermal equilibrium state with plasma if kinetic energy is far greater than the average kinetic energy of charged particles in background plasma. In the relaxation process，the kinetic energy of incident nucleus will be lost individually because of its  interaction with background plasma. In this paper，we take high speed Tritium of 3MeV energy incident into high temperature LiD Plasma as an example，The reaction rate parameter of D(t,n)<sup>4</sup>He reaction in consideration of the non-equilibrium relaxation process of Tritium in the plasma is calculated. In the calculation，the energy losses of Tritium in plasma，caused by Coulomb Scattering Processes of electrons and  variousions is considered，and the fast-ion unified slowing down theory in plasma proposed by C. K. Choi et al.is used to calculate the energy loss rate of Tritium. Both the D(t,n)<sup>4</sup>He reaction of beam-target mechanism in non-equilibrium state and the D(t,n)<sup>4</sup>He reaction in thermal equilibrium state are considered. Neglecting nuclear scattering and the interference between nuclear scattering and coulomb scattering，the calculated results show that，when the temperature of plasma varies in the range of 7.5KeV～20KeV，the correction factor to reaction rate parameter of D(t,n)<sup>4</sup>He in thermal equilibrium state caused by the non-equilibrium relaxation process of Tritium in Plasma is in the range of 1.0062～1.0943，and the higher the temperature of plasma is，the smaller the correction factor is. The results also show that，when the temperature of plasma is fixed，the correction factor slightly increases as the particle number density of plasma increases，but the change is not prominent.]]></description>
<pubDate>2015/1/23 11:00:09</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Yue Zhongwu,Shen Yongping,Wang Shangwu and Kuang Huisun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Yue Zhongwu,Shen Yongping,Wang Shangwu and Kuang Huisun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199304007]]></guid><cfi:id>129</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Complete Classification of f-shell Coupled States and the Eigenvalues of Quasispin Scalar Operator]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199304008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In the second quantization method we introduce the creation-annihilstion operator b<sub>qsm</sub><sup>1/2,1/2,l</sup>，which is triple tensor of rank(1/2，1/2，1) for Q (quasispin)，S (spin)，L (orbit angular-momentum)，and a triple scalar operatorv (k<sub>1</sub>,k<sub>2</sub>,k<sub>3</sub>) ie constructed by coupling of triple tensor，Y (k<sub>1</sub>,k<sub>2</sub>,k<sub>3</sub>)=  ((bb)<sup>k<sub>1</sub>,k<sub>2</sub>,k<sub>3</sub></sup>(bb)<sup>k<sub>1</sub>,k<sub>2</sub>,k<sub>3</sub></sup>)<sup>000</sup>, the Y (k<sub>1</sub>,k<sub>2</sub>,k<sub>3</sub>) commutates with Q，S and L，then it can be used to further ciassify the coupled states. By appropriate combining Y(k<sub>1</sub>,k<sub>2</sub>,k<sub>3</sub>) with Q<sup>2</sup>,S<sup>2</sup>,L<sup>2</sup>,the set of operators
which can clessify completely f-shell is obtained，and the set of operators which can classify in agreement with those of Recah is also obtained.]]></description>
<pubDate>2015/1/23 11:00:09</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Chen Jianhua and Bai Mingfu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Chen Jianhua and Bai Mingfu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199304008]]></guid><cfi:id>128</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[HJK-I Measurement System for Ceramic Meterial Density and Water-Content]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199304009]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The principle and structure of a single-detector fast measurement system for ceramic material density and water-content are introduced in this paper. The techniques for data-processing and actual measurement results for different types of ceramic material are presented.]]></description>
<pubDate>2015/1/23 11:00:09</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Di Shaoliang,Li Xiabo,xiao Yabin,Huang Yong,Wang Shuyuan and Li Xiujuan]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Di Shaoliang,Li Xiabo,xiao Yabin,Huang Yong,Wang Shuyuan and Li Xiujuan</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199304009]]></guid><cfi:id>127</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Investigation of Plasma Heated by Whistler Wave in a Magnetic Mirror]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199304010]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The p1asma heated by a whistler wave in the magnetic fie1d configuration which is necessary for the formation of sloshing e1ectrons is investigated. Detai1ed measurements of the parameters of the p1asma about the resonance zone are presented. The experiment results show  that；(1)there exists a density peak and a temperature peak near the resonance zone；(2)the peaks together with the resonance zone move as B(the magnetic fie1d of the mirror center)changes；(3)the physics mechanism of the p1asma heating is that a lot of e1ectrons absorb the microwave and  turn back near the resonance zone.]]></description>
<pubDate>2015/1/23 11:00:10</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Zhang Jiande<sup>1</sup>,Fang Yude<sup>2</sup>,Shi Yicai<sup>2</sup>,Ning Zhaoyuan<sup>2</sup>,Ren Zhaoxing<sup>2</sup> and Qiu Lijian<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Zhang Jiande<sup>1</sup>,Fang Yude<sup>2</sup>,Shi Yicai<sup>2</sup>,Ning Zhaoyuan<sup>2</sup>,Ren Zhaoxing<sup>2</sup> and Qiu Lijian<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199304010]]></guid><cfi:id>126</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[AC Susceptibility on YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> Bulk Material by Melt-textured Growth Method]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199302011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[By contro1ing the temperature gradient and the slow cooling rate，we have prepared YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> bu1k materia1  by melt-texted growth (MTG) method. Structure ana1ysis and ac. susceptibility measurement show that the crysta1 is preferentially aligned and the temperature is about 92K while the onset demagnetic signal appears. only one single peak of x"appears which shows intragrain loss. The small peak moves to low temperature，the half-width of the peak widen a 1ittle，and the peak becomes stronger when dc.externa1 fie1d varies  from 0 to 600 guass，We exp1ained the experimental resu1ts by the magnetic hysteresis loss.]]></description>
<pubDate>2015/1/23 11:00:32</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Cheng Xiangai<sup>1</sup>,Zen Xinglin<sup>2</sup>,Cao Liezhao<sup>2</sup>,Zhang Qirui<sup>3</sup>,Wang Shunxi<sup>4</sup> and Wang Yugui<sup>4</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Cheng Xiangai<sup>1</sup>,Zen Xinglin<sup>2</sup>,Cao Liezhao<sup>2</sup>,Zhang Qirui<sup>3</sup>,Wang Shunxi<sup>4</sup> and Wang Yugui<sup>4</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199302011]]></guid><cfi:id>125</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Ray-tracing in Non-collinear Optical Systems and Their Image Quality Assessment]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199302012]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The paper discusses the simple coordinate transformation in non-collinear optical systems and their image quality assessment. It describes how  to use the least square method and 0.618 optimization method to quickly choose the best image plane. It also presents how to apply the  Chebyshew numerical integration method to form new image quality indexes used in optical automatic design of the systems.]]></description>
<pubDate>2015/1/23 11:00:32</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Wang Yongzhong and Liu Xiaoqing]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Wang Yongzhong and Liu Xiaoqing</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199302012]]></guid><cfi:id>124</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study of Unsteady Flow of Non-Newtonian Fluids in Annular Pipes]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199301019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In this paper an analytical solution of the unsteady flow of non-Newtanian fluids in annular pipes was found by using the integral transform  method. Numerical simulation was carried out. On the basis of these，a detailed analysis was made to the effects of non-Newtonian coefficient H<sub>c</sub> and the shape factor η on the flow. The obtained conclusions may provide the engineering projection with higher reliability.]]></description>
<pubDate>2015/1/23 11:00:44</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Zhu Wenhui<sup>1</sup> and Liu Ciqun<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Zhu Wenhui<sup>1</sup> and Liu Ciqun<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199301019]]></guid><cfi:id>123</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study of Layer Potential for High-Temperature Superconductor]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199301020]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[This article makes a deep study on layer potential developed in reference[l]. The curves that describe the relation between U and e1ectron  density N<sup>0</sup><sub>e</sub>，and the relation between Cu-O plane number 1 and U，are traced. Furthermore，this article studies the  micromechanism of layer potential-effective Hamiltonian for Cu-O layer，Effective Hamiltonian for Cu-O layer is obtained. The condition for holes (slave-fermions) to be condensed to Cooper pairs is dicussed.]]></description>
<pubDate>2015/1/23 11:00:44</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Lu Yanwen]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Lu Yanwen</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199301020]]></guid><cfi:id>122</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Eigenmode of the Rectangular Waveguide Filled on H-side with Two Dielectrics]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199404011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The eigenmode dispersion on equation and eigenmode function of the rectangular waveguide filled on H-side with two dielectrics were obtained by  solving the electric Hertzian potential equation. The eigenmodes were LSE and LSM，and the dispersion relation curves were also given.]]></description>
<pubDate>2015/1/23 10:59:16</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Ling Genshen and Liu Yonggui]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Ling Genshen and Liu Yonggui</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199404011]]></guid><cfi:id>121</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Elimination of the Interference in Measurement With Quartz Crystals]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199403019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Pressure-shear waves were produced in Y-cut α quartz crystals by normal impact with their linearly elastic anisotropism. This provided a way  to research the response of materials under pressure-shear loading, experimentally. Because of the piezoelectricity of quartz, VISAR technique was used in the experemental measureinent abroad. In our work，Manganin piezoresistive method and electric-magnetic partical velocity method were first adoptes for getting the internal state variation of samples. In our experiment the surfaces of quartz pieces were electroplated with  silver lays of 1μm thick by means of magnetic-controlled shoot, which neutralized polarized current and covered polarized electric field. Lonsequently the piezoelectric interference was eliminated.]]></description>
<pubDate>2015/1/23 10:59:29</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Lu Fangyun<sup>1</sup>,Chen Piqi<sup>2</sup>,Zhang Zhenyu<sup>1</sup> and He Zhi<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Lu Fangyun<sup>1</sup>,Chen Piqi<sup>2</sup>,Zhang Zhenyu<sup>1</sup> and He Zhi<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199403019]]></guid><cfi:id>120</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Single Particle Energy Levels of Nucleon in the Great-Deformed Nuclei Described by Three-parameter Rotating Body Model]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199402016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In this paper，the three-parameter {c,h ，α} rotating body model is used to describe the shape of nuclei which can be changed with great amptitude. By Choosing reasonably the shape-dependent single particle potential of nucleon，the Schrodinger equation of single particle motion is solved by means of basic vector expansion method. Using the method of diagonizing the matrix. We calculated the shape-dependent single particle energy levels of nucleon. By analyzing and comparing these calculated results with those obtained by other authors under the same condition，these calculated results are confirmed to be reliable and rational，which can be used to calculate the shell correction and pair  correction of deformation potential of great-deformed nuclei.]]></description>
<pubDate>2015/1/23 10:59:42</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Wang Shangwu,Shen Yongping,Wang Tongquan and Xing Jingru]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Wang Shangwu,Shen Yongping,Wang Tongquan and Xing Jingru</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199402016]]></guid><cfi:id>119</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[An Approach for Getting Low CO<sub>2</sub> Laser Power in Laser-Assisted Microvascular Anastomosis]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199402019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Getting low CO<sub>2</sub> Laser power is the key technology in laser-assisted microvascular anastomosis. The technology which is used to get  low CO<sub>2</sub> Laser power from the general CO<sub>2</sub> Laser is presented in this paper. Its main advantages are that Laser power on  Laser scalper is modifiable, spot size is controllable and energy density on the light spot is uniform. We give the design principle and an example for practical design in this paper.]]></description>
<pubDate>2015/1/23 10:59:42</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Peng Shengyang and Ju Xinjun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Peng Shengyang and Ju Xinjun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199402019]]></guid><cfi:id>118</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Calculation of Shock Hugoniot Data of Tungsten Carbide And its Mixture]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199402020]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The Hugoniots of porous tungsten carbide (their initial density is respectively 95%，85%，75%, and 65% of that of the solid tungsten carbide)in incompletely and completely densified regimes are calculated. We also obtained the calculated Hugoniout of carbon and silicon carbide infiltrated with 3，5，10wt% tungsten carbide respectively.]]></description>
<pubDate>2015/1/23 10:59:42</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Wang Chenghong and Zou Ming]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Wang Chenghong and Zou Ming</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199402020]]></guid><cfi:id>117</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Using 3-Dimension Non-Linear Langevin Equation To Calculate the Mass Distribution of Fission Fragments]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199504016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In this paper，using diffusion model and {c，h，α} three parameters，we describe nuclear deformation and set up a three-dimension nonlinear Langevin equation. The nuclear deformation motion is simulated with M-C method. The fission fragment mass distributions of highly excited nuclei <sup>198</sup>Hg, <sup>21O</sup>Po and<sup>185</sup>Re are calculated，the mean mass，root mean square of the mass variance and the most  probable values of the fission fragments are given. The calculated results are in agreement with experimental results qualitatively.]]></description>
<pubDate>2015/1/23 16:03:29</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Xing Jingru and Wang Shangwu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Xing Jingru and Wang Shangwu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199504016]]></guid><cfi:id>116</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Beat Frequency System with Two Sets of Laser Frequency Stabilization Schemes Using NH<sub>2</sub>D Stark cell]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199504017]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The beat frequency system is set up with two sets of Laser frequency stabization schemes using NH<sub>2</sub>D stark cell under the conditions of no special vibrationproof, thermostatical measurement and cooling the Laser tube by the mechanical pump water. and we proceed with the beat frequeney experiment. The data of the beat frequency are dealt with in real time by computer, and the Laser frequency Locking stabilization is estimated by the Allon square deviation. The results obtained are as follows: The frequency-stabilized stability of system is more than        4×10<sup>-10</sup>，when the sample time is 1s and 10s respectively. The frequency-stabilized stability of system is more than                 1.7×10<sup>-9</sup>，when the sample time is 100ms，10ms and 1ms respectively. The key technology is given in the paper.]]></description>
<pubDate>2015/1/23 16:03:29</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Peng Shengyang<sup>1</sup>,Hu Yu<sup>2</sup> and Zhu Dayong<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Peng Shengyang<sup>1</sup>,Hu Yu<sup>2</sup> and Zhu Dayong<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199504017]]></guid><cfi:id>115</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Measurement of Compression-shear Loading of Materials]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199504018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[One dimensional planar compression-shear loading acting on the materials，which were cohered to the bact of quartz pieces was realized by using  Y-cut α quartz crystals with their linearly elastic anisotropic dynamic response nature. Electric-magnetic particle velocity method was adopted to measure the movement of particles on different places in the materials. In the experiments，two-wave construction of compression-shear waves that propagated into the materials were observed clearly，the longitudinal and transverse particle velocity histories reflected fetures of dynamic response of materials under compression-shear loading. These results agreed with that from theoretic estimates on the whole.]]></description>
<pubDate>2015/1/23 16:03:28</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Lu Fangyun<sup>1</sup>,Chen Piqi<sup>2</sup>,Xue Honglu<sup>1</sup>,Wei Yuzhang<sup>2</sup> and Zhang Zhenyu<sup>1</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Lu Fangyun<sup>1</sup>,Chen Piqi<sup>2</sup>,Xue Honglu<sup>1</sup>,Wei Yuzhang<sup>2</sup> and Zhang Zhenyu<sup>1</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199504018]]></guid><cfi:id>114</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A COMPLEX OF TWO OPTIMIZATION  IDEAS IN OPTICAL AUTOMATIC DESIGN]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199503013]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[There are drawbacks and difficulties while using the single adaptive method or DLS (damped least squares) method to do optical automatic design，respectively. The article advances suggestion to make the two optimization ideas complex in a terse and short program of microcomputer，and presents a simple implementation scheme of the complex. The program after the complex takes the adaptive method assisted by the DLS method as its optimization idea，it keeps the virtues of both single adaptive method and single DLS method，and overcomes their defects，thus it is superior to both of them.]]></description>
<pubDate>2015/1/23 16:03:15</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Wang Yongzhong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Wang Yongzhong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199503013]]></guid><cfi:id>113</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[MEASUREMENT OF PLASMA POTENTIAL USING EMISSIVE PROBE IN A MAGNETIC MIRROR]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199503014]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The use of emissive probes in magnetic mirror plasma is investigated. It is shown that plasma potential can be determined from one probe characteristic curve. Data indicate that the inflection point of the current-voltage curve gives the plasma potential well.]]></description>
<pubDate>2015/1/23 16:03:15</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Zhang Jiande<sup>1</sup>,Fang Yude<sup>2</sup>,Qiu Lijian<sup>2</sup> and Ren Zhaoxing<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Zhang Jiande<sup>1</sup>,Fang Yude<sup>2</sup>,Qiu Lijian<sup>2</sup> and Ren Zhaoxing<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199503014]]></guid><cfi:id>112</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Initiation Speculiarity of the Solid Explosive Charges under Combined Compression-shear Loading]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199502011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The initiation Speculiarity of the solid explosive charges under combined compression-shear loading is investigated in this paper. Two kinds of experiment about compression-shear loading have been carried out，one is the experiment in which compression-shear loading is realised by using the normal impacting quartz，and the possibility of chemical reaction taking place in the charges is analysed according to the movement of different partictcs inside the charge specimens measured dy means of electric-magneti particle velocity method；the other is the experiment in which the loading is realised by means of parallel inslant impact method on the compression-shear gun，and the possibility of charge explosion is observed. The experiments show that when the compression stress is under condition of sub-detonotion,the shear stress combining in the loading will play, a role in sensitization of the charge initiation a more sensitive initiation response of explosive is caused by the  compression-shear loading under moderate proportion. Experimental analysis of rules and mechanism of the initiation response of explosive is presented in the paper]]></description>
<pubDate>2015/1/23 16:03:02</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Lu Fangyun,Xue Honglu,Chen Piqi,Zhang Zhenyu and Chen Gang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Lu Fangyun,Xue Honglu,Chen Piqi,Zhang Zhenyu and Chen Gang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199502011]]></guid><cfi:id>111</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Quantum Ring Current Theory for Magnetic Properties of the Fullerene]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199502012]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[An expression of electron ring currents of molecule in the presence of a uniform external magnetic field is derived upon the basis of the  quantum theory with gauge invariance. A general formulation for magnetic susceptibility is obtained. The susceptibility of C<sub>60</sub> and C<sub>70</sub> is calculated by using the theory. The quantum ring current theory is compared with the London rign current theory, and the  approximation in the London theory is pointed out.]]></description>
<pubDate>2015/1/23 16:03:03</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Jiang Zongfu and Yang Lijia]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Jiang Zongfu and Yang Lijia</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199502012]]></guid><cfi:id>110</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Optimization of the Uniformity of the Solenoid Magnetic Field]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199502015]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The uniformity and the dropping rate of the end field of the Solenoid magnetic field are Optimiz by the positive and opposite compensating  coil. The theory and experiment results show that this method has distinctly improved the uniformity and the dropping rate of the end field of  the Solenoid magnetic field.]]></description>
<pubDate>2015/1/23 16:03:03</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Li Xiangsheng,Ling Genshen,Wang Yong and Li Chuanlu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Li Xiangsheng,Ling Genshen,Wang Yong and Li Chuanlu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199502015]]></guid><cfi:id>109</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Two-dimensional Dynamic Calculation of X-ray Thermal Shock Wave in Cylindrical Shell]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199502018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In this paper，the propagation of X-ray thermal shock wave in cylindrical shell is studied according to the two-dimensional fluid-elastic-plastic model and two-dimensional fracture method. The two-dimensional effects of thermal shock wave in cylindrical shell are shown in the paper.]]></description>
<pubDate>2015/1/23 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Zhao Guomin,Zhang Ruoqi and Chen Jibin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Zhao Guomin,Zhang Ruoqi and Chen Jibin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199502018]]></guid><cfi:id>108</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The π Electron magnetic Susceptibility of C<sub>76</sub>、C<sub>78</sub>、C<sub>82</sub>、C<sub>84</sub>and C<sub>90</sub>]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199501013]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The π electron magnetic susceptibility of D<sub>2</sub>-C<sub>76</sub>、C<sub>2v</sub>-and D<sub>3</sub>-C<sub>78</sub>、C<sub>2</sub>-C<sub>82</sub>、D<sub>2</sub>-and D<sub>2d</sub>-C<sub>84</sub>and C<sub>2</sub>-C<sub>90</sub> is calculated with Gauge invariant molecular orbitals method. The calculation results show that these carbon Cluster molecules have large diamagnetic susceptibility. Thus the π electrons of these molecules have large delocal motion and aromatic character.]]></description>
<pubDate>2014/6/11 15:46:14</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Jiang Zongfu,Yang Lijia,Wang Lijun,Jin Chunying,Zhong Hairong and Li Qiang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Jiang Zongfu,Yang Lijia,Wang Lijun,Jin Chunying,Zhong Hairong and Li Qiang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199501013]]></guid><cfi:id>107</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Studies on the Shock Temperature Measurement of Metals]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199501014]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The method of multiwavelength optical radiation measurements for shock temperatures is described. The shock temperature of 45<sup>#</sup> steel at the shock pressure of about 230GPa is measured by using optical pyrometer. The measurement results are compared and analyzed.]]></description>
<pubDate>2014/6/11 15:46:14</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Tang Wenhui,Hu Jinbiao,Jing Fuqian and Zhang Ruoqi]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Tang Wenhui,Hu Jinbiao,Jing Fuqian and Zhang Ruoqi</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199501014]]></guid><cfi:id>106</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Multi-time-scale Algorithm for Two-dimensional Particle Simulation Code]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199603026]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Multi-time-scale algorithm is used in two-dimensional electromagnetic relativistic particle simulation of plasma produced by laser beam. It described correctly the collective effects of plasmas and reduced much computational cost.]]></description>
<pubDate>2014/6/11 15:43:23</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Cao Lihua,Liu Daqing,Chang Wenwei,Yue Zongwu and Zhao Yijun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Cao Lihua,Liu Daqing,Chang Wenwei,Yue Zongwu and Zhao Yijun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199603026]]></guid><cfi:id>105</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Metal Cladding Optical Waveguide Polarizer Using Gd<sub>2</sub>O<sub>3</sub> As a Buffer Layer]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199603027]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The first published report of using Gd<sub>2</sub>O<sub>3</sub> as a buffer layer to make integrated optical polarizers on Ti: LiNbO<sub>3</sub> is presented. The calculating and experimental results are given. The extinction ratio of polarizer>35dB.]]></description>
<pubDate>2014/6/11 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Feng Ying and Ji Jiarong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Feng Ying and Ji Jiarong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199603027]]></guid><cfi:id>104</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Description for Free Particle by Steady Wave Packet]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199602028]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Based upon the basic viewpoints of A. Einstein on quantum mechanics and de Broglie's double wave functions principle，the wave-particle postulate and the wave-particle physical quantities postulate are presented. The wave-particle function as a free wave packet is obtained in which is involved a generalized δ-function factor as representations for the center of the extensive wave phenomena. The free wave packet is steady，not spreading with time, and is the real representation for the free particle. The wave function ψ describes the statistical ensemble. Combining the wave function with the wave-particle function gives the complete description for the single free particle.]]></description>
<pubDate>2014/6/11 15:43:05</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Tan Shusheng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Tan Shusheng</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199602028]]></guid><cfi:id>103</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Vibrational Spectra of Impurity Atoms in InSb Crystal]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199602030]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The vibrational spectra of impurity atoms in InSb crystal has been calculated with the recursion method according to the experimental result of the phonon dispersion relation for InSb. The impurity atoms are Al，Ca，As and p，respectively. In our model，6209 atoms are taken into account.]]></description>
<pubDate>2014/6/11 15:43:05</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Liu Zejin,Lu Qisheng,Jiang Zhiping,Yan Weixian and Zhao Yijun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Liu Zejin,Lu Qisheng,Jiang Zhiping,Yan Weixian and Zhao Yijun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199602030]]></guid><cfi:id>102</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Chiral Structure for the Fullerene D<sub>2</sub>-C<sub>84</sub>]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199601024]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A chiral structrure for the fullerene D<sub>2</sub>-C<sub>84</sub> is proposed. The conclusion explains why the formed ratio of D<sub>2</sub>- to D<sub>2d</sub>-C<sub>84</sub> in the experiment is 2:1. The structure and symmetry and stability of fullerene isomer is discussed.]]></description>
<pubDate>2014/6/11 15:42:50</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Yang Lijia and Jiang Zongfu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Yang Lijia and Jiang Zongfu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199601024]]></guid><cfi:id>101</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Calculation of the Thickness of Fast-Neutrons Shield with the Monte Carlo Method]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199601025]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In the Monte Carlo Calculation，we simulate the neutron tracks or histories by means of the random nature of the neutron interactions with the   medium of shield which is a shell of the sphere made of Iron，and neutrons are produced by the T（d ，n)<sup>4</sup> He reaction with 300 keV  deuteron beam energy. By the explanations and analyses of results based on the Monte Carlo Calculation, we obtain the optimal thickness of  shield, which slows down neutrons from 14 MeV to 1.0 MeV. The calculated results agree with those of the same kind shields of foreign countries, and have certain value of reference in applied field.]]></description>
<pubDate>2014/6/11 15:42:50</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Dai Hongyi<sup>1</sup>,Yang Huazhong<sup>2</sup> and Su Tongling<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Dai Hongyi<sup>1</sup>,Yang Huazhong<sup>2</sup> and Su Tongling<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199601025]]></guid><cfi:id>100</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Method of Estimating the Density of Solids under Zero Temperature and Zero Pressure]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199601026]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The density of solids under zero temperature and zero pressure is an important physical parameter. In this paper a simple method of estimating the density under zero temperature and zero pressure is presented by using the Debye theory，and the densities under zero temperature and zero  pressure of 82 materials are calculated.]]></description>
<pubDate>2014/6/11 15:42:50</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Tang Wenhui]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Tang Wenhui</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199601026]]></guid><cfi:id>99</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Combining Analytical Method with Numerical Simulation to Obtain Blast Load on Chamber Wall Produced by an Explosive Charge]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199706018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The method combining numerical simulation with analytical solution of strong explosion was employed to determine blast load on the inner wall of an explosive chamber produced by a concentrated charge with different weight. The calculated results were compared with those of experiments at several typical position on chambers and showed a good agreement. The approach can eliminate the numerical oscillation near the symmetric
center of chambers and was effective to determine the blast load.]]></description>
<pubDate>2014/5/28 9:49:24</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Zhu Wenhui,Xue Honglu and Zhang Zhengyu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Zhu Wenhui,Xue Honglu and Zhang Zhengyu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199706018]]></guid><cfi:id>98</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Finite Element Method Applied to the Two-Dimensional Neutron Transport Equation]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199706019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The phase-space finite element method is applied to the multigroup neutron transport equation in cylindrical critical systems. The continuous piecewise polynomial trial functions are trilinear in the space variables and bilinear in the angle variables. Elements are triangular in the spatial domain and rectangular in the angle domain. Galerkin method is used to derive a set of simultaneous algebraic equations. The coefficient matrices of the algebraic equations are compressed and stored. The resulting finite element equations are solved by gaussion elimination method. Numerical results are compared to those obtained by SN calculations. FEM was observed to yield a higher order of convergence and accuracy.]]></description>
<pubDate>2014/5/28 9:49:24</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Wang Tongquan,Zhang Shufa,Shen Yongping and Wang Shangwu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Wang Tongquan,Zhang Shufa,Shen Yongping and Wang Shangwu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199706019]]></guid><cfi:id>97</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Study of Evaporation of Monomethy Hydrazine (MMH)at High Pressure]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705015]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Evaporation of monomethyl hydrazine(MMH)at high pressure is studied. The MMH droplet radius and temperature at different environmental  pressure is computed and compared. The evaporation constant. the number of heat transfer and the number of mass transfer.are considered and computed. The results are identical to the test data. The effect of Lewis number to the limit pressure of evaporation is evaluated. It shows that the evaporation model and compute method are reasonable. The results are important for the analysis of the combustion process in liquid rocket engine. This method may be used to evaluate other fuels.]]></description>
<pubDate>2014/5/28 9:49:12</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Nie Wansheng and Zhuang Fengchen]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Nie Wansheng and Zhuang Fengchen</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705015]]></guid><cfi:id>96</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Experimental System for Measuring the Mechanical Properties of Polymer Under High Strain Rate]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[This Paper describes a technique developed to measure the uniaxial compressive stress-strain properties of polymers at the strain rate appropriate to ballistic and impact events over time scales of tens of microseconds using a Dropweight-Camera system. The instrument  constructed represents a novel development of existing equipment types. The results obtained from compression testing give stress and strain  measurements at strain rates of up to 10<sup>3</sup>s<sup>-1</sup> and over a temperature range of 20一200℃. The stress and strain can be independently obtained simultaneously. This dropweight-camera system has the capability of providing direct visualisation simultaneously with  stress information of the processes occurring during the deformation and fracture of materials.]]></description>
<pubDate>2014/5/28 9:49:13</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Xinwu Zeng<sup>1</sup>,G.M.Swallowe<sup>2</sup> and S.Hamdan<sup>3</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Xinwu Zeng<sup>1</sup>,G.M.Swallowe<sup>2</sup> and S.Hamdan<sup>3</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705016]]></guid><cfi:id>95</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Fabrication of Embed Integrated Proton-exchanged Optical Polarizer and Study on the High Extinction Ratio Testing Set]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705017]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Integrated optical polarizers have been fabricated by using titanium indiffusion in conjunction with proton exchange. The polarizer consists   of Ti-diffused channel waveguide with a short discontinuity fi1led with proton-exchanged waveguide. In this paper we have discussed the  measuring methods which were reported in some refernces and proposed a novel design for charactering the integrated optical polarizers. While using this setup the polarizer fabricated in our laboratory exhibited polarization extinction ration of >52.5db.]]></description>
<pubDate>2014/5/28 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Ji Jiarong and Feng Ying]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Ji Jiarong and Feng Ying</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705017]]></guid><cfi:id>94</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[On the Choice of the Shield Parameters of Fast Neutron with the Direct Simulation Method]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[With the Monte Carlo direct simulation method，we simulate the neutron tracks or histories by means of the random nature of the neutron interactions with the medium of shield which is a shell of the sphere made of Iron，and neutrons. are produced by the T(d，n)<sup>4</sup>He reaction with 300 keV deuteron beam energy. The reflective properties and absorptive properties of neutrons are analysed in the different thickness of the medium of Iron. These explanations and analyses of results have an important value in choosing shield parameters of spheric shell of fast neutron.]]></description>
<pubDate>2014/5/28 9:49:13</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Dai Hongyi,Yang Huazhong,Wang Shangwu and Su Tongling]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Dai Hongyi,Yang Huazhong,Wang Shangwu and Su Tongling</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705018]]></guid><cfi:id>93</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Compact Coaxial Shunt for Measuring Intense Pulse Beam Current of Vacuum Diode]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A compact coaxial shunt，which is assembled in anode seat，is introduced. The active resistance and response time are calibrated to be 2mΩ and  3.2ns，respectively. The shunt has been used to measure intense beam current from vacuum diode of 81-7M-01 Intense Relativistic Electron Beam   Accelerator and measurement beam current is about 90kA. This kind of shunt with simple structure is used easily and potential applied in  research of material and form of anode and cathode effecting on electron beam currents of vacuum diode.]]></description>
<pubDate>2014/5/28 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Liu Jinliang and Tan Qimei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Liu Jinliang and Tan Qimei</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705019]]></guid><cfi:id>92</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of Particle Number on the Particle-simulation of Early Stage Resonance Absorption in Laser-plasma Interaction]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705020]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The results caused by different particle number in particle-simulation of laser-plasma resonance absorption is investigated. The outcome is also  analysed in physical and computational aspect.]]></description>
<pubDate>2014/5/28 9:49:14</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Liu Daqing,Cao Lihua,Chang Wenwei and Yue Zongwu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Liu Daqing,Cao Lihua,Chang Wenwei and Yue Zongwu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199705020]]></guid><cfi:id>91</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Formation and Development of Shear Bands in Explosives under Combined Compression-shear Loading]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199701018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A calculation model of shear bands is proposed in this paper to describe the formation and development of the shear bands in viscoplastic materials, such as explosives, when they are acted by Combined Compression-shear Loads. The calculation results in a further recognization of the shear bands. Further more, the relationship between variation features of the shear bands and initiation of the explosives are discussed.]]></description>
<pubDate>2014/5/28 9:46:39</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Lu Fangyun and Xue Honglu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Lu Fangyun and Xue Honglu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199701018]]></guid><cfi:id>90</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Experiment Study of Electrically Exploded Opening Switch]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199806017]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Opening switch technology is the key to inductive storage system. In this paper, the mechanism of conductor's electrically exploding is discussed. The experience formula is presented to determine the parameters of the electrically exploded conductor as an opening switch. And the configuration of such an opening switch is designed. Good results have been achieved in experiment. By the adjusting of conductor parameters, high-power pulse signals are generated with the duration of 280ns and the voltage gain of several tens. It is showed that this kind of opening switch can play an important role in high power microwave generation with such device as vircator used as the load.]]></description>
<pubDate>2014/1/3 16:01:52</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Li Yongzhong,Zhang Jiande,Zhang Xueshu,Peng Xiangyang and Chen Dongqun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Li Yongzhong,Zhang Jiande,Zhang Xueshu,Peng Xiangyang and Chen Dongqun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199806017]]></guid><cfi:id>89</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Dielectric-lined Multiwave Cerenkov Generators]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199804018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[This paper presents the concept of a Dielectric-lined Multiwave Cerenkov Generator (DMWCG), which is investigated with particle simulation method. It is showed that the DMWCG can operate in a lower diode-voltage range with much higher radiation efficiency as compared with the usual Multiwave Cerenkov Generator(MWCG). This result shows a possible way for the application of the DMWCG into such a field as high power microwave generation with Explosive Magnetic Compression. Also showed through the simulation are both the downshift of the microwave frequency in the presence of the liner and the existence of the optima for the permittivity of the liner as well as for the magnitude of the guiding magnetic field.]]></description>
<pubDate>2014/1/3 16:01:27</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Shu Ting and Liu Yonggui]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Shu Ting and Liu Yonggui</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199804018]]></guid><cfi:id>88</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Finite Element Calculation of αParticle Transport and Energy Deposition Rate in High Temperature High Density Deuterium-Tritium Plasma]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199804019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In this paper, the time-dependent Fokker-Planck equation of α particle angular density distribution function in one-dimensional spherical symmetric D-T plasma is seperated to two equations relevant to velocity and ordinates when discreted in time domain. The velocity variable in these two equations is treated by multigroup method, while the ordinate variables are treated by finite element method, thus two finite element equations are obtained. By couple calculation of these two equations, the variation of α particle angular distribution function vs time is calculated numerically. Based on these results, the time and space distribution of energy deposition rates of αparticles to ions and electrons in plasma are calculated respectively, and the total energy deposition rate of αparticles to background plasma is also obtained.]]></description>
<pubDate>2014/1/3 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Wang Shangwu and Wang Tongquan]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Wang Shangwu and Wang Tongquan</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199804019]]></guid><cfi:id>87</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[On Superconducting Performance of YBa<sub>2</sub> Cu<sub>3</sub>O<sub>7-δ</sub> in Addition with Ag<sub>2</sub>O]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199804020]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[According to molecular formula YBa<sub>2</sub>Cu<sub>2.7</sub>Ag<sub>0.3</sub>O<sub>7-δ</sub>(YBCAO), we have prepared bulk superconducting samples by solid state reaction method. In order to investigate the effect of Ag<sub>2</sub>O addition on the property of YBCO, the measurment of the temperature dependance of resistance, XRD and SEM have been used respectively. The results show that the grains become smaller and the superconducting stability is strengthened. In this paper, the results are discussed.]]></description>
<pubDate>2014/1/3 16:01:27</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Liang Linmei,Cheng Xiangai and Hu Yongming]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Liang Linmei,Cheng Xiangai and Hu Yongming</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199804020]]></guid><cfi:id>86</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Design of a Multiwave Cerenkov Generator]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199801021]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The configuration for a Multiwave Cerenkov Generator is designed with the help of a 2 1／2 D fully electromagnetic relativistic Particle-in-Cell (PIC) simulation code. Good performance of the well configured device is showed by simulation under a wide range of operation conditions  (U<sub>d</sub>=300～500kV，I<sub>b</sub>=0.45～10kA and τ<sub>p</sub> =10～10<sup>2</sup>ns). The microwave is generated in X-band (～10Hz)with
radiation efficiency in the order of 10%. The power level is approximately 300MW for its maximum.]]></description>
<pubDate>2014/1/3 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Shu Ting and Liu Yonggui]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Shu Ting and Liu Yonggui</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199801021]]></guid><cfi:id>85</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Influence of High Power Microwave on the Property of High Tc YBCO Superconductor]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199801022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The samples YBCO (123 phase) have been prepared by solid state reaction method. The influence of high power microwave on the property of high  T<sub>c</sub> YBCO superconductor has been studied by means of the measurement of superconductivity (T<sub>c</sub>) and the SEM. The experimental results show that the transition from semiconductor to superconductor takes place at the T<sub>co</sub>≈90K，the transition width ΔT，is widened and the grains become smaller. We think the influence results from the implused high press of high power microwave. On the one hand，the pinning cores are produced，which hinders the magnetic flux from wriggling，on the other hand. the annealing can improve the connections between grains，which benefits the  improvement in the critical current density J<sub>c</sub>.]]></description>
<pubDate>2014/1/3 16:00:52</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Cheng Xiangai,Liang Linmei and Hu Yongming]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Cheng Xiangai,Liang Linmei and Hu Yongming</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199801022]]></guid><cfi:id>84</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Radiation Effects in the Space Radiation Environment]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199904009]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The natural space radiation environment and the basic mechanisms of radiation effects are two most important issues relating to the research of radiation hardening techonology of spacecrafts. In this paper, some of the general properties of natural space radiation environment are summerized, the basic mechanisms of radiation effects are anylized briefly, and the emphasis of present research relating to the radiation hardening techonology of spacecrafts is pointed out.]]></description>
<pubDate>2013/11/18 15:32:46</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Wang Tongquan,Shen Yongping,Wang shangwu and Zhang Shufa]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Wang Tongquan,Shen Yongping,Wang shangwu and Zhang Shufa</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199904009]]></guid><cfi:id>83</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Forms of 5-bit Quantum Error Correcting Codes]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199903022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In all kinds of quantum error-correcting scheme, five-bit quantum error-correcting codes is discussed most frequently. This paper classifies all kinds of error form with chart according to orthogonality condition, then provides a means to find all forms of five-bit quamtum error-correcting codes conveniently with direct perception and symmetry of chart.]]></description>
<pubDate>2013/11/18 15:33:03</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[Chen Pingxing]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>Chen Pingxing</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/199903022]]></guid><cfi:id>82</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Free-Lagrangian Method Based on Taylor’s Expansion]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200005026]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The Free-Lagrangian Method Based on Taylor’s Expansion is developed. A one-dimensional hydrodynamic code is written according to this method. Both examples of the shock tube and impact of flyer on the target are simulated by this code. The results are in good accordance with that obtained by traditional Lagrangian difference code.]]></description>
<pubDate>2013/11/18 15:30:33</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[MAO Yiming,YUAN Shengfu and TANG Wenhui]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>MAO Yiming,YUAN Shengfu and TANG Wenhui</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200005026]]></guid><cfi:id>81</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Method of Processing Rigid Boundary Condition in SPH Simulation]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200106013]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A method of boundary force is used to process rigid boundary condition in smoothed particle hydrodynamics (SPH) simulation, and a new boundary force is given. Both problems of the free surface flows: bursting dam and bore, are simulated by using the SPH method via the boundary force. The numerical results show that the method of boundary force can be successfully used to process the rigid boundary condition.]]></description>
<pubDate>2013/8/21 9:51:18</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[TANG Wenhui<sup>1</sup> and MAO Yiming<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>TANG Wenhui<sup>1</sup> and MAO Yiming<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200106013]]></guid><cfi:id>80</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Experiment of the Impulse Produced by the Explosion of Mild Detonating Fuses]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200106014]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The impulse produced by the explosion of mild detonating fuses is measured by using photoelectric method. The experimental results indicated that only a small part of all lead particles hitting the target, adher to it, and the impulse is pooduced by the interaction between exploded mild detonating fuses.]]></description>
<pubDate>2013/8/21 9:51:18</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZHAO Guomin<sup>1</sup>,ZHANG Ruoqi<sup>1</sup>,PENG Changxian<sup>2</sup>,TAN Hongmei<sup>2</sup> and LIN Peng<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHAO Guomin<sup>1</sup>,ZHANG Ruoqi<sup>1</sup>,PENG Changxian<sup>2</sup>,TAN Hongmei<sup>2</sup> and LIN Peng<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200106014]]></guid><cfi:id>79</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Optical Imaging Techniques Based on Intrinsic Signals of the Functional Brain]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200105028]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[We make an introductory review on the optical imaging techniques based on intrinsic signals including the last achievement in this field. First, we give the general concepts and fundamental principles of optical imaging techniques based on intrinsic signals such as the definition, characteristics, classification. Then, the differences between this techniques and other optical imaging techniques of functional brain are compared. Finally, we point out possible directions for further research.]]></description>
<pubDate>2013/8/21 9:51:32</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[HU Dewen,LEI Zhen,FENG Yueliang and WU Zhiyong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HU Dewen,LEI Zhen,FENG Yueliang and WU Zhiyong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200105028]]></guid><cfi:id>78</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Design of a Ultra-high numerical Aperture Catadioptric Optical System and it's Application]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200105029]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The optical design of an optical system of an ultra-high numerical aperture is introduced. The introduction includes the point difficulties, the design considerations, the solutions and the final results. Comparing to the past optical system, it has two noted characters, that is ultra-high numerical aperture and larger quadratic aspherical surface. The optical system will be used to detect and analyze the samples of the earth or soils.]]></description>
<pubDate>2013/8/21 9:51:32</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[TANG FengLan,TANG Bo and YI Ming]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>TANG FengLan,TANG Bo and YI Ming</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200105029]]></guid><cfi:id>77</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Influence of Spin in Studying Persistent Currents of One-dimension Mesoscopic Rings]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200104007]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[This paper reports the analytic and numerical results of persistent currents in one-dimension mesoscopic rings with the free electron model by taking spin into consideration. Extending to three-dimension ,the theoretic result is close to the experiment result. The article introduces theoretically the modulation by spin for the first time.]]></description>
<pubDate>2013/8/21 9:51:44</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[CHEN Junbin and ZHU Xia]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>CHEN Junbin and ZHU Xia</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200104007]]></guid><cfi:id>76</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Electromagnetic Field Boundary Conditions in Particle Simulation of Plasma]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200104008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[For the choice of electromagnetic field boundary conditions in particle simulation of plasma,the simple absorbing boundary conditions, Lindman boundary conditions and super absorbing boundary conditions are discussed in detail.The results show that the computing quantity is the least and the error is the most for the simple absorbing boundary conditions, the computing quantity is the most and the error is the least for the super absorbing boundary conditions, and the error is less and the reflectance is little affected by the angle of incidence for Lindman boundary conditions.]]></description>
<pubDate>2013/8/21 9:51:44</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[HUO Qifeng and SHAO Fuqiu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HUO Qifeng and SHAO Fuqiu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200104008]]></guid><cfi:id>75</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Radiative Opacity of High Temperature Plasmas Obtained by Detailed-term-accounting Approximation]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200104009]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The physical problems concerned with the calculations of the radiative opacities of high temperature plasmas are presented, the emphasis being placed on such atomic processes as bound-bound transitions, bound-free transitions and the autoionization resonance broadening. Various broadening mechanisms related to the calculations of the bound-bound absorption are also discussed. The theories of the calculations of the radiative opacities of high temperature plasmas using detailed-term-accounting (DTA) approximation have been introduced. The theoretical results are compared with the experiments. Emphasis is placed on discussing some of the results we have obtained recently.]]></description>
<pubDate>2013/8/21 9:51:44</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZENG Jiaolong and YUAN Jianmin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZENG Jiaolong and YUAN Jianmin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200104009]]></guid><cfi:id>74</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Optical Imaging of Functional Brain:An Introductory Review]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200104018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The background and development of functional brain imaging are briefly reviewed. The optical imaging technologies of brain function are then introduced and classified. Several methods including voltage sensitive dyes imaging, optical imaging based on intrinsic signals, optical coherence tomography imaging, event-related optical signals imaging are  summerized and compared, and the key factors of how to choose an optical imaging system recording fast brain activity are summed up. Based on the analysis and comparison, we suggest how to improve functional brain imaging technologies and point out possible directions for further research.]]></description>
<pubDate>2013/8/21 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[HU Dewen and LEI Zhen]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HU Dewen and LEI Zhen</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200104018]]></guid><cfi:id>73</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Particle Simulation of the Magnetic Mirror Field Confining Plasma]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200103006]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The motion of the plasma with an initial velocity distribution in magnetic mirror field is described by using PIC particle simulation methods, and the particle tracks of the plasma motion in magnetic mirror field can be obtained. It is proved that the magnetic mirror field can confine the motion of plasma and PIC particle simulation method is feasible and effective to simulate the physical process of the plasma in the magnetic mirror field.]]></description>
<pubDate>2013/8/21 9:52:03</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[LIU Lie,LIU Yonggui and YANG Jiankun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Lie,LIU Yonggui and YANG Jiankun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200103006]]></guid><cfi:id>72</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Numerical Study of Vircator Driven by an Inductive Storage System]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200103007]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[PSpice equivalent circuit is created to simulate the process of a Vircator driven by an inductive storage system. Current through and Voltage across the Vircator are investigated using the circuit. The models for electric exploding wires and vircator are established, which could be used to quickly form the simulation circuit and obtain the simulation results. Numerical results show that parameters of the pulse transformer and the electric exploding wires along with the transparency of the anode foil affects the voltage and the current of the Vircator load.]]></description>
<pubDate>2013/8/21 9:52:03</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[YANG Hanwu,ZHONG Huihuang and ZHANG Jiande]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YANG Hanwu,ZHONG Huihuang and ZHANG Jiande</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200103007]]></guid><cfi:id>71</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[C-band Magnetically Insulated Transmission Line Oscillator Simulation and Analysis]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200103008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[New magnetically insulated line oscillator(MILO) designs with modified structures are presented and simulated by 2D particle-in-cell (PIC) code. Relations among some parameters are analyzed. The output varying with input voltage and slow wave structure is found. That the operating frequency remains unchanged with input voltage is proved numerically and experimentally. Experiments also show that a start voltage is need for MILO to work.]]></description>
<pubDate>2013/8/21 9:52:03</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[LIU Song,LIU Yonggui,SHU Ting and QIAN Baoliang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Song,LIU Yonggui,SHU Ting and QIAN Baoliang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200103008]]></guid><cfi:id>70</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on Ejector Efficiency Engineering Calculation in Pressure Recovery System]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200103009]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In the pressure recovery system of a high-energy chemical laser, the ejector is a very important equipment. Its efficiency influences all the system. In this paper, theory of the engineering calculation of the ejector efficiency is studied. The conservation equations are used. Since in an ejector, active and passive air has diffierent thermodynamic and physical constants. This influence must be considered in calculation. The results of the calculation of diffierent parameters show that some parameters have important influence. Some qualitative rules have got for engineering design.]]></description>
<pubDate>2013/8/21 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[HUANG Hua and JIANG Zongfu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HUANG Hua and JIANG Zongfu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200103009]]></guid><cfi:id>69</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Object-orient Plasma Simulation Code in Cylindrical Coordinates]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200102022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A 2-1/2D full electromagnetic particle-in-cell code ABLE2D is presented. The physical model and computational technology in cylindrical mesh, with r-and z-coordinate dependence, has been introduced in detail. Applying object-oriented technology to analyses the physical objects and their physical property, we have reasonably build up object models of solution space and successfully realized the computational function of Plasma simulation system.]]></description>
<pubDate>2013/8/21 9:52:19</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZHUO Hongbin,CHANG Wenwei and ZHUO Hongchun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHUO Hongbin,CHANG Wenwei and ZHUO Hongchun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200102022]]></guid><cfi:id>68</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Monte Carlo Simulation of the High Energy Ions Transport in Materials]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200101025]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[This paper deals with the Monte Carlo Simulation of the transport of high energy ions in materials, The incident high energy ions interact with the target material in a way is approximate to the two unrelated mechanisms, nuclear scattering and electronic process. The energy loss of incident ions due to nuclear scattering is calculated using binary collision approximation.The impact parameter is sampled and scattering angle can be derived. The electronic energy loss of incident ions for the high energy is calculated by Bethe-Bloch formulation. Lindhard-Scharff formulation is used for low energy and the interpolation formulation is used for the medium energy region. Finally, the computer simulation of high energy irons transport in aluminum and silicon is made, and the results are presented and analyzed.]]></description>
<pubDate>2013/8/21 9:52:33</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[WANG Tongquan,ZHANG Ruoqi,SHEN Yongpin,DAI Hongyi,ZHANG Wenyong and XIAO Yabin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Tongquan,ZHANG Ruoqi,SHEN Yongpin,DAI Hongyi,ZHANG Wenyong and XIAO Yabin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200101025]]></guid><cfi:id>67</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Pulsed Transformer with High Voltage and lntense Current]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200101026]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The study of pulse transformer is one of the key problems of pulsed power conditioning system.The technical requirement and the construction parameters of the pulse transformer are presented.Test results of the transformer are also given.The inductance of the primary coil is        3.6μH,and the coupling efficiency is 0.77.When input voltage is 60kV,output voltage can be 500kV.]]></description>
<pubDate>2013/8/21 9:52:33</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[LI Yongzhong,ZHANG Jiande,LI Chuanlu,LIU Jinliang and LI Jijian]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Yongzhong,ZHANG Jiande,LI Chuanlu,LIU Jinliang and LI Jijian</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200101026]]></guid><cfi:id>66</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Particle Simulation of the Coaxial Vircator]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200101027]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A 21/2 dimension particle-in-cell(PIC) code is used to simulate a coaxial virtual cathode (vircator). By changing the geometrical and electrical parameters of the device, a series of regular knowledge has been achieved .Simulation results show that the output power of microwave is enhanced and the phenomenon of multiple frequencies is also suppressed by adding an electron collector.]]></description>
<pubDate>2013/8/21 9:52:33</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZHOU Shaoping,LIU Yonggui,LI Chuanlu and QIAN Baoliang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHOU Shaoping,LIU Yonggui,LI Chuanlu and QIAN Baoliang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200101027]]></guid><cfi:id>65</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Simulation of the Stress Wave in Laminated NonlinearMaterials with MOC]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200205023]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The method of cell, based upon the effective stiffness theory, can be applied to construct the constitutive equations of materials with periodical structure, especially laminated materials, and simulate the propagation of stress wave. In this paper, two kinds of initial conditions are listed for the simulation of dynamic response of nonlinear elastic materials according to this method, and the oscillations of stress wave in laminated materials are researched.]]></description>
<pubDate>2013/8/21 9:50:03</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[XU Mingli,ZHANG Ruoqi and ZHANG Guangying]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XU Mingli,ZHANG Ruoqi and ZHANG Guangying</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200205023]]></guid><cfi:id>64</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Teleportation of an Unknown Atomic State via Nonresonant Interactionof a Degenerate V-type Three-level Atom with Cavity Field]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200205024]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Based on the modified effective Hamiltonian for the system which the degenerate V-type three-level atom interacts with coherent state cavity field under far-off resonant condition, the wave function of the system is derived by means of matrix forms. A feasible scheme is presented for the  teleportation of an unknown atomic state via far-off resonant interaction of a degenerate V-type three-level atom with coherent state cavity field.]]></description>
<pubDate>2013/8/21 9:50:03</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[DAI Hongyi,LI Chengzu and CHEN Pingxing]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>DAI Hongyi,LI Chengzu and CHEN Pingxing</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200205024]]></guid><cfi:id>63</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Numerical Modeling of Elastic Waves Propagating in the Anisotropic/Heterogeneous Media by the Pseudo-Spectral Method]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200203005]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Numerical modeling has long been recognized to be a powerful method of studying the  wave propagation in media with complicated structures. More interests are aroused in the anisotropic problem and heterogeneous problem. The Pseudo-Spectral Method (PSM), with which global spatial derivatives are computed by multiplication in Fourier domain, is a new numerical modeling method based on the elastic wave equation developed in recent years. The main advantage of PSM is that it requires a relatively small number of grid points to achieve a specified accuracy. The PSM and its stability are presented. A 2-D PSM code based on workstation or PC is developed to model the 2-D elastic waves propagation in anisotropic/heterogeneous media.]]></description>
<pubDate>2013/8/21 9:50:35</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZHANG Guangying and ZENG Xinwu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Guangying and ZENG Xinwu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200203005]]></guid><cfi:id>62</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Hydrodynamic Calculation of the Armature Expansion Process]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200203006]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A 2-D axisymmetric nonlinear explicit finite-element dynamic analysis program is applied to compute the armature expansion process of the magnetic flux compression generator (FCG). The temperature rising and thermal softening are considered as Johnson Cook material is used for the armature. The results present the picture of expansion process of the armature, the expansion angle and temperature rising.]]></description>
<pubDate>2013/8/21 9:50:35</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[YANG Hanwu,ZHONG Huihuang and ZHANG Jiande]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YANG Hanwu,ZHONG Huihuang and ZHANG Jiande</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200203006]]></guid><cfi:id>61</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Influence of Guiding Magnetic Fieldto the E-Beam Reflux in Foil-less Diode]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200202023]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The reflux is one of the main factors to cause the dielectric surface flashover. The possibility of producing the reflux is analyzed by the use of Maxwell equations and electron motion equations. Then the PIC method is used to simulate the production process of the e beam electrons reflux in foil-less diode and some simulation results are presented. Finally some suggestions are given for the optimum design of the diode by choosing proper guiding magnetic field and diode structure.]]></description>
<pubDate>2013/8/21 9:50:53</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[LIU Lie,LIU Yonggui and ZHANG Yazhou]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Lie,LIU Yonggui and ZHANG Yazhou</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200202023]]></guid><cfi:id>60</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Numerical Calculation of Vlasov-type Mode Convertor]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200202024]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to find a calculation method for the design of Vlasov-type mode convertor, the electromagnetic radiation field of Vlasov radiator is calculated with vector diffraction theory by constructing a proper model, and the field scattered by reflector is also calculated. Numerical far-field radiation patterns accord basically with the measured results, which shows that it is useful for the design and analysis of Vlasov-type mode convertor.]]></description>
<pubDate>2013/8/21 9:50:53</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[YUAN Chengwei and LING Genshen]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YUAN Chengwei and LING Genshen</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200202024]]></guid><cfi:id>59</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Finite-element Analysis of a Circular WaveguideBevel Cut Radiator]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200306017]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The finite-element method(FEM) is a popular technique for analyzing electromagnetic scattering, radiation, and penetration. Far-field radiation pattern of circular waveguide bevel cut and fields in the waveguide are analysed with three-dimensional FEM. Results of X band are compared with related documents and FEM follows the main beam very well but disagrees more with the measurements away from the main beam. The theoretical analysis shows that the main beam of far-field radiation pattern shifts from axis direction about 27°～42° and the gain is about 11～14dB with 30° the bevel cut angle in C-band, it can be applied to high power microwave.]]></description>
<pubDate>2013/6/14 9:08:50</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[YUAN Haijun,ZHONG Huihuang and ZHOU Weihong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YUAN Haijun,ZHONG Huihuang and ZHOU Weihong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200306017]]></guid><cfi:id>58</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on Virtual Cathode Oscillator with E-beam Modulated]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200306018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Virtual cathode oscillator (vircator) with electron beam (e-beam) modulated was studied using an improved “cellular conveyer” model and particle in cell (PIC) simulation. It is shown that the variation of the e-beam modulation parameters result in the change of vircator character, and microwave efficiency can be increased in proper e-beam modulation.]]></description>
<pubDate>2013/6/14 9:08:50</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[WANG Honggang,ZHANG Yazhou and CHEN Yuzhong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Honggang,ZHANG Yazhou and CHEN Yuzhong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200306018]]></guid><cfi:id>57</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Advanced Borris Rotation Method in ParticleSimulation of Plasma]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200306019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[An advanced Borris rotation method is proposed to solve the relativistic Lorentz equation. The method can describe the dynamic behavior of particles in intense magnetic field accurately. It is especially adaptive to simulate the interaction of ultra-intense laser and plasmas by using the advanced Borris rotation method in particle simulation.]]></description>
<pubDate>2013/6/14 9:08:50</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[YIN Yan and CHANG Wenwei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YIN Yan and CHANG Wenwei</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200306019]]></guid><cfi:id>56</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Simulation of Concrete Penetrated by Rigid Projectile withCoupled FE-SPH Methods]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200306020]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The combination of dynamic FEM and SPH method was applied to simulate the concrete target penetrated by high-velocity rigid projectile. The HJC constitutive model was applied to describe the behavior of concrete material. The numerical results are in good agreement with recent experimental results obtained from φ57 gas gun, and reproduce the details of the movement of projectile, the scattering of concrete, the propagation of stress wave in the target. The feasibility and validity of applying the newly obtained method and HJC concrete model to simulate such problems as the high-velocity impact and penetration in concrete have been also proved.]]></description>
<pubDate>2013/6/14 9:08:50</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[CAI Qingyu<sup>1</sup>,CUI Weifeng<sup>1</sup>,XIANG Dong<sup>2</sup> and ZENG Xinwu<sup>1</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>CAI Qingyu<sup>1</sup>,CUI Weifeng<sup>1</sup>,XIANG Dong<sup>2</sup> and ZENG Xinwu<sup>1</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200306020]]></guid><cfi:id>55</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Numerical Simulations on Steel-concrete Blast Chamber under the Internal Explosive Load]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200303007]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The dynamic finite element method was applied to simulate the explosive flow field of an axisymmetric cylindricblastchamberwith an ellipsoid cap, the stress and strain responses of the steel-concrete part were analyzed. The  numerical simulationresultsshowthat the major low and high frequency of stress wave of steel liner is generated by reduplicate reflection of the blastwave on steellinerand intrinsic vibration of liner structure, and that the twice reflection of the blast wave on cap part of thechamber is important,thereby the space-time distribution of plasticity and damageresponses of concrete have been fundamentallyaffected.Thenumericalresults are in good agreement with experimental results.]]></description>
<pubDate>2013/6/14 9:08:14</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[CAI Qingyu<sup>1</sup>,ZENG Xinwu<sup>1</sup> and HU Yongle<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>CAI Qingyu<sup>1</sup>,ZENG Xinwu<sup>1</sup> and HU Yongle<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200303007]]></guid><cfi:id>54</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Numerical Study of Power Laser Passing Through theSupersonic Free Shear Layer]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200301021]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[This paper is based on the discussion of the law of the interaction between the optic-field and fluid-field.The physical model is used which is high-energy laser beam to cross through the two dimension super-sonic free shot flow. It is discussed that the disturbance of the fluid-field caused by the radiation heating and the changing of laser beam's intensity after the beam passing through the fluid field and propagating a long distance in the steel atmosphere. The results show that there's a distinctness infection of fluid-field to the optic-field.In studying the interaction of high-speed fluid-field with high-energy laser, the radiation heating will be ignored.]]></description>
<pubDate>2013/6/14 9:07:50</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[HE Xuzhao,YI Shihe and REN Bing]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HE Xuzhao,YI Shihe and REN Bing</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200301021]]></guid><cfi:id>53</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Relation between the SLM Mode by TFT-LCD andthe Directions of Polarizer/Analyzer]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200301022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[TFT-LCD is a very important spatial light modulator in the optical information processing. The positive optical image,the edge weakened optical image and the negative optical image are obtained by changing the direction of the polarizer or analyzer when the spatial light is modulated by TFT-LCD with the digital images inputed. It is explained in accordance with the theory of the linear-twisted liquid crystal device as an spatial optical complex amplitude modulator.]]></description>
<pubDate>2013/6/14 9:07:50</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[CHEN Qianrong and ZHOU Jinpeng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>CHEN Qianrong and ZHOU Jinpeng</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200301022]]></guid><cfi:id>52</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Band Gap Calculation for Two-dimensional LiquidPhononic Crystals with Square Lattices]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200301023]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[PWM is introduced to calculate the phononic band gaps for two dimensional liquid phononic crystals with square lattices. Complete phononic band gaps are found in the carbon tetrachloride/mercury composite system, and all these band gaps reach the widest point for a filling fraction of ～22%. Among the three different shapes of the inclusions' section studied, the circular section is easier to attain large band gaps than the square section and obliquely rotated square one. The widest band gap ΔΩ=0.5497 appears in the circular section system when the filling fraction f=0.229. If the substances of the inclusions and matrix are interchanged (i.e., mercury/carbon tetrachloride system), the gaps obtained are much narrower.]]></description>
<pubDate>2013/6/14 9:07:50</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[QI Gongjin,YANG Shengliang,BAI Shuxin and ZHAO Xun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>QI Gongjin,YANG Shengliang,BAI Shuxin and ZHAO Xun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200301023]]></guid><cfi:id>51</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Experimental Study of the Long Rod Projectile PenetratingThree Kinds of Concrete Targets]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200405006]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to investigate the penetrating characteristics of earth penetrating weapons, a series of simulation experiments have been performed on 57mm diameter gas gun by launching long rod projectiles penetrating three kinds of concrete targets. These concrete targets are cement mortar, steel fiber reinforced concrete(SFRC) and the SFRC with a board made by tightly arranged corundum spheres inside. The experimental results indicate that the nose shape has important influence on the penetration depth, while targets are impacted by the same projectiles at the same velocity. The penetration depth into SFRC with the board is decreased about 11%, but the penetration depth into cement mortar is increased about 12% as compared with that into the SFRC.]]></description>
<pubDate>2013/5/3 9:19:52</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZHANG Rouqi,TANG Wenhui,ZHAO Guomin,SHI Zhiyong,SUN Yan and GONG Changchao]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Rouqi,TANG Wenhui,ZHAO Guomin,SHI Zhiyong,SUN Yan and GONG Changchao</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200405006]]></guid><cfi:id>50</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Experimental Study of the Crater Performance about the LongRod Projectile Penetrating Steel Fiber Reinforced Concrete Target]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200405007]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The experiments of small scale projectiles penetrating SFRC targets are performed on the 57mm diameter light gas gun. They are intended to investigate the performance of the projectile penetrating into the steel fiber reinforced concrete (SFRC) targets (volume percentage of 5). The impacted crater shapes of SFRC targets are observed, and the velocities of projectiles impacting the targets are measured. The crater volume of the targets is measured by the pouring sand-filling method, and the penetration volume is calculated. The relation between the kinetic energy of the projectile and the penetration volume is obtained. The kinetic energy of per unit penetration volume and the impact kinetic energy per unit cross section are introduced to review their relation by dealing with the experimental data.]]></description>
<pubDate>2013/5/3 9:19:52</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[SHI Zhiyong,TANG Wenhui,ZHAO Guomin and ZHANG Rouqi]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>SHI Zhiyong,TANG Wenhui,ZHAO Guomin and ZHANG Rouqi</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200405007]]></guid><cfi:id>49</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Finite Difference Time Domain Method for the Study of the Band Gap in the Two-dimensional Rectangular Arrays of the Steel Tubes in Air]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200404015]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[By choosing the proper time difference, the algorithmic instability of O(2,4) finite difference time domain (FDTD) method is got rid of in dealing with the crucial distinction of density and elastic constants on interfaces. Using the improved staggered grid FDTD method, we calculated the Г-Х directional band gap of the two-dimensional phononic crystal, which was composed of rectangular arrays of ? 28.5mm steel tubes with lattice constant of 103mm. Calculated results were compared with the measured ones, and both results coincided well.]]></description>
<pubDate>2013/4/27 3:07:23</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[WANG Gang,ZHAO Honggang,WEN Jihong and HAN Xiaoyun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Gang,ZHAO Honggang,WEN Jihong and HAN Xiaoyun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200404015]]></guid><cfi:id>48</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Phononic Band Gaps for Two-dimensional SquareArray of the Large Acoustic Impedance Cylinders in Air]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200404016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The band gaps of the two-dimensional phononic crystal composed of square array of cylinders in air are analyzed by the plane-wave expansion (PWE) method. The numerical result shows that the band gaps are independent of the physical parameter of the scatter if the acoustic impedance of the scatter is much greater than that of the matrix. So the band gaps are determined by the radius of the cylinders and the lattice constant. It doesn't matter whether the cylinders are hollow or not.]]></description>
<pubDate>2013/4/27 3:07:23</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZHAO Honggang,LIU Yaozong,HAN Xiaoyun,WEN Jihong,WANG Gang and YU Dianlong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHAO Honggang,LIU Yaozong,HAN Xiaoyun,WEN Jihong,WANG Gang and YU Dianlong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200404016]]></guid><cfi:id>47</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Numerical Analysis of Using LIIF to Measure the MixedPerformance in DF/HF Chemical Laser]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200404017]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The laser induced iodine fluorescence(LIIF) is an advanced technology to visualize the flowfield. To get the precision of using this method to investigate the mixed performance of the nozzle in chemical lasers, the cold flowfield of HYLTE nozzle in CW DF/HF chemical laser is simulated. The flowfield which uses the mixed gas made up of helium and iodine as the oxidant, the helium gas used as fuel is measured. The distribution of the mole fraction of the F atom in the first flowfield and the I<sub>2</sub>  molecular in the second flowfield are compared. When the mass fraction of iodine molecular in the He-I<sub>2</sub> mixed gas is about 54%, using LIIF to measure the mixed mechanism of HTLTE nozzle in DF/HF chemical laser is more precise.]]></description>
<pubDate>2013/4/27 3:07:23</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[SHI Jianhua,JIANG Zongfu,YUAN Shengfu and HUA Weihong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>SHI Jianhua,JIANG Zongfu,YUAN Shengfu and HUA Weihong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200404017]]></guid><cfi:id>46</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Qualitative Evaluation of the Obscure Effect of Smoke byIR-imaging Equipment]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200404019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The IR thermal-imaging equipment is used to test the obscure effect of smoke screens. Based on the experimental data, different qualitative-evaluation methods for the IR-jamming effects are discussed. Different influential factors,such as the temperature of the target，the screen display of the IR-imaging equipment and the artificial factor are analyzed.]]></description>
<pubDate>2013/4/27 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[HU Biru,WU Wenjian,MAN Yahui and LI Meng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HU Biru,WU Wenjian,MAN Yahui and LI Meng</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200404019]]></guid><cfi:id>45</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Structure Configurationand Operation Characteristics of the Axially Extracted Vircator with a Feedback Annulus]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200403011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[An axially extracted virtual cathode oscillator(vircator) with a feedbackannulus is configured through particle-in-cell(PIC) simulation. And the effects of thefeedbackmechanism are studied through PIC method. The simulationresults indicate that the new vircator can increase the output power more than two times compared with the conventionalaxiallyextracted vircator under the same condition. Besides it can narrow the bandwidth and purify the modes.]]></description>
<pubDate>2013/4/27 3:07:06</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[LIU Zhenxiang,SHU Ting,ZHANG Jiande and QIAN Baoliang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Zhenxiang,SHU Ting,ZHANG Jiande and QIAN Baoliang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200403011]]></guid><cfi:id>44</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Synthetic Discrimination Method in Nuclear SeismicMonitoring with Fuzzy Logic Illation]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200402024]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[We designed a kind of fuzzy illation method with enhancement property to synthesize some kinds of seismic event discrimination criterions. Using this method, we researched a synthetic discrimination method of nuclear test seismic monitoring with fuzzy logic illation, and listed its theory framework. The case study showed that by this method we will be able to decrease the population of suspicious seismic events in nuclear test seismic monitoring.]]></description>
<pubDate>2013/4/22 10:35:44</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[SONG Jiangjie and ZENG Xinwu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>SONG Jiangjie and ZENG Xinwu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200402024]]></guid><cfi:id>43</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Theoretical Study on the Water Surface TransversalMini-wave due to the Underwater Sound Field]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200401022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[On the condition of the underwater acoustic signal, the perturbed amplitude would be small, and the general hydrodynamic equation may be linearied. On the basis of this approximation, the horizontal dispersion relation and the form of the water surface are obtained. The results show that the water surface transversal mini-wave has the characteristics of shorter wavelength and lower velocity, therfore it can modulate the light indensity of the incident laser beam on the water surface， which lays the theoretical foundation for the detection of underwater signal.]]></description>
<pubDate>2013/4/22 10:35:30</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[DAI Zhenhong<sup>1,2</sup>,SUN Jinzuo<sup>1</sup> and SUI Pengfei<sup>1</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>DAI Zhenhong<sup>1,2</sup>,SUN Jinzuo<sup>1</sup> and SUI Pengfei<sup>1</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200401022]]></guid><cfi:id>42</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Properties of Transmission Research of2-D Loss and Dispersive Materials in Photonic Crystals]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200401024]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Transfer matrix method (TMM) is used to study the transmission properties of photonic crystals. The Mur absorbing boundary and periodic boundary are used respectively to truncate the computational region in photonic crystals. For two dimensional square lattice photonic crystals, the transmission coefficient versus the frequency of E-polarized incident electromagnetic waves propagating in photonic-band-gap structures is calculated in perfect periodic structures. A model of 2-D square lattice photonic crystals is designed and fabricated in microwave wavelength regions. The results of numerical simulation are in good agreement with experimental results. And also the properties of transmission are studied in 2-D loss, dispersive and absorbing materials of photonic crystals. And how the photonic band gaps are affected by loss and the dispersive absorbing materials of photonic crystals is investigated.]]></description>
<pubDate>2013/4/22 10:35:30</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[MEI Luoqin,ZENG Chun,YE Weimin,YUAN Xiaodong,ZHU Zhihong,ZHANG Wanyun and WANG Hua]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>MEI Luoqin,ZENG Chun,YE Weimin,YUAN Xiaodong,ZHU Zhihong,ZHANG Wanyun and WANG Hua</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200401024]]></guid><cfi:id>41</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Smoothed Particle Hydrodynamics AlgorithmApplied in Penetration Problem]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200504010]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The contact algorithm based on Riemann solution was used to simulate the penetration process of high velocity impact problems in two-dimension axisymmetric coordinates. The artificial viscosity hadn't been used when the velocities and stresses at the contact surface were determined by Riemann solution instead of the mean values of velocities and stresses between the contacting basic and surrounding particles. It shows the achieved result is the same as FEM, and the method can be applied in impact problems.]]></description>
<pubDate>2013/4/8 11:10:21</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[XU Zhihong,TANG Wenhui and LUO Yong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XU Zhihong,TANG Wenhui and LUO Yong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200504010]]></guid><cfi:id>40</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Properties of One-dimensional MetallodielectricPhotonic Crystals]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200504011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[An eigen matrix method is introduced  to obtain the properties of one-dimensional metallodielectric photonic crystals.The results show that this crystals have the spectra of being transparent in the visible range, highly reflecting the ultraviolet light and microwaves ,and an even wider omni-directional band gap in which the reflection is higher than the dielectric photonic crystals.]]></description>
<pubDate>2013/4/8 11:10:21</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[GAO Qiang,YAN Dunbao,YUAN Naichang and ZHANG Guohua]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>GAO Qiang,YAN Dunbao,YUAN Naichang and ZHANG Guohua</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200504011]]></guid><cfi:id>39</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Numerical Modeling of Elastic Waves Propagating inCracked Media by the Indirect BEM]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200503020]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The indirect boundary element method (BEM) is presented. The wave propagation in cracked media is solved by means of 2-D dynamic boundary integral equation. A 2-D BEM program is developed to model the elastic waves excited by a point explosive source propagating in the fractured rocks. Numerical results show that the BEM is an effective method for seismic wave modeling.]]></description>
<pubDate>2013/4/8 11:09:49</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[HAN Kaifeng,YIN Zian and ZENG Xinwu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HAN Kaifeng,YIN Zian and ZENG Xinwu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200503020]]></guid><cfi:id>38</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Simulation of Equilibrium Molecular Dynamics of REBO Model]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200501008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to obtain the appropriate “sample” for “computer experiment”to study molecular dynamics of the shock detonation of solid explosives, we carried out simulation of NVE and NVT molecular dynamics using REBO model. In addition, we carried out the simulation without artificial scale, therein the evolution of the system is absolutely driven by movement functions. Finally, we discuss how to choose the appropriate simulation method for different requirements.]]></description>
<pubDate>2013/3/25 4:48:27</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[TAN Xiaoli<sup>1</sup>,ZENG Xinwu<sup>1</sup> and WANG Pei<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>TAN Xiaoli<sup>1</sup>,ZENG Xinwu<sup>1</sup> and WANG Pei<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200501008]]></guid><cfi:id>37</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Analysis of the Microphysical Performances of theArtificial Fog Forming Process]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200606026]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The macroscopical properties and the changing of microscopical performances of artificial fog have been studied. In terms of the discussion of the forming theory of fog, the difference between experimental results and the theoretical calculation was compared. The results showed that the granularity and liquid water content of artificial fog droplet were a few less than that of the natural fog while the droplet concentration of artificial fog was higher than that of natural fog. Furthermore, the fog size distribution was different between them.]]></description>
<pubDate>2013/3/14 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[DAI Mengyan,WU Wenjian and HU Biru]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>DAI Mengyan,WU Wenjian and HU Biru</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200606026]]></guid><cfi:id>36</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Study of Simulation and Experiment of Target-directedDeformable Warhead Model]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200601027]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[According to the theory of target-directed deformable warhead, a structural model was designed and an experiment of explosion was carried out. Based on the experiment results, the finite element analytic model was established. By utilizing the code LS-DYNA, the deforming process of the deformable warhead and the projectile process of its fragments were numerically simulated. The results of simulation and experiment show that the density and velocity of the fragments are greatly enhanced in the target direction and the simulation is consistent with experiment.]]></description>
<pubDate>2013/3/25 4:43:54</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[LI Xiangyu,LU Fangyun,WANG Zhibing,LU Li,TIAN Zhandong and LIN Yuliang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Xiangyu,LU Fangyun,WANG Zhibing,LU Li,TIAN Zhandong and LIN Yuliang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200601027]]></guid><cfi:id>35</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Improvement of Data Processing for Dynamic TensileExperiment and Application]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200703007]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[SHTB tests were conducted and it was found that interfering signals coming from interfaces between specimen and bars influence the experimental results obviously. In order to get the real properties for the tested materials, an improved data processing was performed to revise the interfering signals. The experimental data of an aluminum alloy under the dynamic tension loading were processed by the improved program, and more reasonable results were achieved.]]></description>
<pubDate>2013/2/28 5:08:40</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[WANG Ruifeng,LU Fangyun,LIN Yuliang and CHEN Rong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Ruifeng,LU Fangyun,LIN Yuliang and CHEN Rong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200703007]]></guid><cfi:id>34</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[An Application of Subsection Calculating Method inSimulating of Blasting Stress Wave]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200806019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A subsection calculating numerical simulating method is presented, based on the different dynamic responses of rock under blasting and the different limitations of dynamic finite element algorithms and traditional numerical simulating algorithms of seismic wave. The subsection calculating method divides the simulating region  into an elastic region in which dynamic finite element algorithms are applied and an inelastic region in which traditional numerical simulating algorithms are applied while displacement is applied to the boundary conditions between different regions. The numerical simulating results indicate that the subsection calculating method is correct and effective in numerical simulations of seismic wave in rock under blasting.]]></description>
<pubDate>2012/12/7 2:58:06</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[YAN Bo<sup>1</sup> and ZENG Xinwu<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YAN Bo<sup>1</sup> and ZENG Xinwu<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200806019]]></guid><cfi:id>33</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Experimental Studies on the Design of Explosive Logic Gap Null Gate]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200903006]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Explosive logic network is a key technology to the aimable warhead, and gap null gate is a basic logic element of explosive logic network. It is necessary to realize the function of the gap null gate. A transmitting-explosive based on RDX was developed, and a gap null gate with the transmitting-explosive was validated experimentally. Formulations of the transmitting-explosive and the gap distance suitable for the gate were concluded. The detonation velocity of the selected transmitting-explosive was measured, and a gap null gate in small scale was designed. The gap null gate will proved reference for designing the explosive logic network.]]></description>
<pubDate>2012/11/8 3:52:31</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[GONG Bailin<sup>1</sup>,LU Fangyun<sup>1</sup>,LI Xiangyu<sup>1</sup> and CHEN Hong<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>GONG Bailin<sup>1</sup>,LU Fangyun<sup>1</sup>,LI Xiangyu<sup>1</sup> and CHEN Hong<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/200903006]]></guid><cfi:id>32</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Numerical Simulation of the Effects of Strain Rate and AdiabaticSoftening on the Cavity Expansion Model]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201103010]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A numerical method was used to study the relationship between the dynamic radial stress and the expanding velocity at a cavity wall in metal materials. The simulation results of the elastic-perfectly plastic and power-law model satisfied the theories' that proves the availability of the method. Then the influences of the strain-rate and adiabatic effects of the materials were analyzed by simulation. The results show that the predictions of penetration with the strain-rate and thermal effects of the materials corresponded well with the experiments. The penetration resistance will be overvalued if the thermal effects were neglected, resulting in slightly lower penetration prediction. The predictions of Warren's theory model are less than the experiments made in the current study because Warren's theory model accumulated the errors from compressibility but ignored the thermal softening.]]></description>
<pubDate>2012/9/13 9:40:51</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[YAN Luhui,FENG Xingmin,XIA Qingbo and Kong Xiaopeng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YAN Luhui,FENG Xingmin,XIA Qingbo and Kong Xiaopeng</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201103010]]></guid><cfi:id>31</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[The Resonance of Subwavelength Cut-wire Pair Arrays inTerahertz Regime]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201103011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Transmission properties of periodic structured subwavelength cut-wire pairs in terahertz regime were investigated numerically using finite element method. Under the normal incidence, the resonant peak in transmission spectra was found with red shift by increasing width as the metal wire width increases. In comparison with the analytical model, it is shown that this phenomenon results from the coupling of Fabry-Pérot resonance and dipole resonan]]></description>
<pubDate>2012/9/13 9:40:51</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[SUN Lin and YUAN Jianmin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>SUN Lin and YUAN Jianmin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201103011]]></guid><cfi:id>30</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Modeling of the electric field generated by metal 
body moving under seawater]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201306025]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A mathematical model is proposed to calculate the electric fields induced by the motion of metal body across the earth's magnetic field, according to deriving the expressions of electric fields induced by the vertical and horizontal DC current under seawater using the mirror image method. The magnitude and spatial distribution characteristics of the electric fields were analyzed, the results show that in the 30m depth, the magnitude of the electric field induced by a 20m′s long metal ellipsoid sailing 10m below water surface at the velocity of 4m/s is nV/m, and apparent characteristics can be noticed in its spatial distribution.]]></description>
<pubDate>2014/1/8 17:09:36</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZHANG Jiawei,XIONG Lu and GONG Shenguang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Jiawei,XIONG Lu and GONG Shenguang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201306025]]></guid><cfi:id>29</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Description of the first debris clouds formed by hypervelocity Impact]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201305021]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The hypervelocity impact studied in numerical simulation way was discussed. Damage mechanism, the process of the debris cloud forming and its expanding were simulated with the SPH method of ANSYS/AUTODYN code when spherical projectile hypervelocity impacts thin shield. Tungsten alloy, RHA(Rolled Homogeneous Armor) and aluminum material models and parameters were given, using the modeling methods, material models and parameters of the numerical simulation results in good agreement with the experimental results. The debris cloud parameters such as Vx,max,Vy,max and the half-angle of maximum radial extension(θ<sub>1</sub>) were obtained with numerical simulation, and the above parameters with the variation of the initial impact conditions were also studied. The empirical equations which relate these parameters to impact parameters, such as velocity, material parameters of projectile and target and plate thickness, were obtained based on dimensional analysis.]]></description>
<pubDate>2013/11/6 15:57:51</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[WANG Qingtao<sup>1</sup>,ZHANG Qingming<sup>2</sup>,WU kegang<sup>1</sup> and LI Bihong<sup>1</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Qingtao<sup>1</sup>,ZHANG Qingming<sup>2</sup>,WU kegang<sup>1</sup> and LI Bihong<sup>1</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201305021]]></guid><cfi:id>28</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Defect modes in the phononic crystal based on Helmholtz 
resonators with point defect]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201305022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Defect mode can be created by introducing point defect in the one-dimensional crystal containing Helmholtz resonators. Based on the acoustic transfer matrix method and finite element method, the relationship among the defect mode, the geometrical parameters of the defect cell, and the acoustic field distribution in the structure at the frequency of the defect mode was studied. The results show that the defect mode moves to the edges of the local resonant forbidden band with the increase of the coupling effect between the defect cell and the perfect cells. In addition, acoustic energy localization is also observed due to the existence of the defect state. The research result will be of help for designing new acoustic filters and energy concentrators.]]></description>
<pubDate>2013/11/6 15:57:51</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[GAO Dongbao and ZENG Xinwu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>GAO Dongbao and ZENG Xinwu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201305022]]></guid><cfi:id>27</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of shielding on helical coilgun inductance gradient]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201305023]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The inductance gradient is the most important parameter for coilgun design. By establishing a two-dimensional finite element model, effects of four shield materials with different dimensions and distance between coils and shield on inductance gradient were investigated. The coil's current distribution and magnetic field distribution under different shields were presented. Analysis shows that the inductance gradient is affected both by material conductivity and permeability. The conductivity determines the induced eddy current in the shield. The permeability determines the degree of strengthening the main magnetic field. By reducing the distance between driving coils and shield, the magnetic materials enhance the magnetic flux better, but more eddy currents are induced in the shield conductor. By increasing the thickness of the shield, the magnetic materials enhance the magnetic flux better, but more eddy currents are induced in the conductive materials due to the decreasing resistance. In order to achieve the maximum inductance gradient, high permeability silicon steel sheets can be used as the shield, the distance between coils and shield should be reduced, and the thickness of silicon steel sheets should be as small as possible to reduce eddy current effects.]]></description>
<pubDate>2013/11/6 15:57:51</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[LIU Zhenxiang<sup>1</sup>,YANG Dong<sup>1</sup>,JIANG Yaqin<sup>1</sup>,SHEN Zhi<sup>1</sup>,YANG Lijia<sup>2</sup> and OUYANG Jianming<sup>1</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Zhenxiang<sup>1</sup>,YANG Dong<sup>1</sup>,JIANG Yaqin<sup>1</sup>,SHEN Zhi<sup>1</sup>,YANG Lijia<sup>2</sup> and OUYANG Jianming<sup>1</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201305023]]></guid><cfi:id>26</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research on the projection characteristics of fragments 
under the loading of the oblique shock wave]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201301012]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to study the projection angles in asymmetrical structure, the oblique shock wave theory was used to describe the process of detonation wave shocking on the metal surface. The calculation method of projection angle was obtained after the velocity multiplication law on free surface simplified the shock wave theory to estimate the velocity of particles in metal. The explosion experiments of a D-shaped warhead were done to validate this method. The results show that this method is in good agreement with experimental data; when the incident angle is less than 40°, the projection angle will increase linearly with increasing the incident angle.]]></description>
<pubDate>2013/3/13 9:54:33</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[WANG Mafa<sup>1</sup>,LU Fangyun<sup>1</sup> and LI Xiangyu<sup>1,2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Mafa<sup>1</sup>,LU Fangyun<sup>1</sup> and LI Xiangyu<sup>1,2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201301012]]></guid><cfi:id>25</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Modeling of eddy current impedance in moving-coil loudspeakers]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201406007]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The eddy current impedance in voice coil affects the behaviors of the high-frequency response of moving-coil loudspeakers under small input voltage. Based on the equivalent electrical circuit method in lumped parametric system and using the power exponent function of angular frequency to fit the magnitude and phase of the eddy current impedance, the power exponent function model of voice-coil eddy-current impedance was presented. The electrical impedance curves of six loudspeaker units in three types were obtained by using the laser impedance measurement system and the model parameters of eddy current impedance were identified by fitting the measured impedance curves with the least square method. Error comparisons between the simulative values and the measured data show that the power exponent function model can accurately reflect the change relationships between the measured eddy-current impedance and frequency. The magnitude and phase have small errors and behave good correspondences with the measured data.]]></description>
<pubDate>2015/1/22 16:38:31</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[KONG Xiaopeng,ZENG Xinwu and TIAN Zhangfu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>KONG Xiaopeng,ZENG Xinwu and TIAN Zhangfu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201406007]]></guid><cfi:id>24</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Basic mechanical properties of ultra high molecular 
weight polyethylene fiber concrete]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201406008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Based on the rank C70 high strength concrete, the experiments of the cubic compression, splitting tensile and four-point bending for four kinds of ultra high molecular weight polyethylene (UHMWPE) concrete with different fiber contents were conducted to research the effects of the fiber content on mechanical properties of concrete. The results show that the enhancement effect of the UHMWPE fiber on the compressive strength of concrete is not obvious. However, the added UHMWPE fiber greatly improves the splitting tensile strength and bending strength of concrete and it has excellent effects on toughness and crack resistance of concrete. The splitting tensile strength increases more than 25% when the fiber content is between 0.3% and 0.5%; the bending strength increases more than 23% when the fiber content is 0.5%.]]></description>
<pubDate>2015/1/22 16:38:31</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[YAN Luhui,ZHANG Yuwu and ZHU Lin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YAN Luhui,ZHANG Yuwu and ZHU Lin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201406008]]></guid><cfi:id>23</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research on the performance of a supersonic flow 
modulated speaker]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201404027]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[It is generally acknowledged that the sound pressure level (SPL) of air-modulated speaker (AMS) will finally reach the level of saturation when the chamber pressure increases to a certain degree. As a new approach to obtain higher SPL output, supersonic flow modulation was discussed in which the flow speed of nozzle exit was increased from sonic to supersonic. Results from the quasi-steady theory proved that, when the chamber pressure is high, the SPL in the supersonic case is higher than that in the sonic case. Larger SPL increments generally appear at smaller nozzle area ratio. The improvement of the source intensity was validated by the comparison of sound measurements between the sonic and supersonic cases in low frequency modulation. But in high frequency modulation, due to the transient flow effect, the SPL in the supersonic case is the same as that in the sonic case while the air jet is considered to be not fully developed or sped up to be supersonic.]]></description>
<pubDate>2014/9/4 17:19:45</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[TIAN Zhangfu,ZHAO Yun,GONG Changchao and SUN Haiyang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>TIAN Zhangfu,ZHAO Yun,GONG Changchao and SUN Haiyang</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201404027]]></guid><cfi:id>22</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Approximate calculation on the axial residual velocityof the PELE penetrate thin metal target plate]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201505013]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[By using the shock wave theory, the process that PELE (Penetrator with Enhanced Lateral Efficiency) penetrated a thin metal target was analyzed. The energy loss of the PELE in the process of penetrating the target plate could be divided into  the energy obtained by plug when jacket and filling impacted the target, the increased internal energy of jacket and filling, and the shear energy dissipated in the outer and inner edge on the front end of jacket in the process of penetrating the target, etc. Based on the principle of conservation of energy and the method to determine these energies, the approximate formula of the axial residual velocity of PELE was presented. Results show that the axial residual velocity and the calculated results are in good agreement with the experimental data. Compared with the energy loss in different conditions, the filling material has little effect on projectile penetrating ability, and the energy that the plug obtained is the largest while the shear dissipated energy can be neglected.]]></description>
<pubDate>2015/11/9 16:21:58</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[FAN Zijian<sup>1,2</sup>, RAN Xianwen<sup>2</sup>, TANG Wenhui<sup>2</sup>, YU Guodong<sup>3</sup>, LI Zebin<sup>2</sup> and CHEN Weike<sup>3</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>FAN Zijian<sup>1,2</sup>, RAN Xianwen<sup>2</sup>, TANG Wenhui<sup>2</sup>, YU Guodong<sup>3</sup>, LI Zebin<sup>2</sup> and CHEN Weike<sup>3</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201505013]]></guid><cfi:id>21</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Symmetrical characteristics of 3-D translatingpulsating source 
Green function and its application in ship seakeeping]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201502025]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to further improve the computation efficiency of seakeeping prediction for the ships with forward speed, the symmetry property was introduced into the calculations of velocity potentials in the 3-D translatingpulsating source Green function method. Based on the Green function′s symmetry, the specific measures were put forward to evaluate the ship hydrodynamics. By the symmetrical magnitude of source point to field point, the integral symmetry expressions of normal derivative of harmonic function at the symmetric line and surface elements were derived and obtained. The symmetrical characteristics were applied to simplify the matrix of coefficient in the boundary integral equation. A theoretical method with high efficiency was presented for the seakeeping performance of 3-D ship advancing in waves. Numerical results and example analysis show that the symmetry property of translatingpulsating source Green function is available for the minimization of computation and memory amount and is proved effective in the numerical calculations of wave exciting forces, motion responses and free-surface waveform for the advancing ship in waves. It is expected to extend the symmetrical characteristics of translating-pulsating source Green function to the hydrodynamic analyses of interacting two ships or complex ship form in frequency domain.]]></description>
<pubDate>2015/5/16 9:33:25</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[XIAO Wenbin and DONG Wencai]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XIAO Wenbin and DONG Wencai</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201502025]]></guid><cfi:id>20</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[An empirical method for the determination of critical condition 
in split Hopkinson tensile bar test]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201501018]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In split Hopkinson tensile bar test, it is necessary to obtain the smallest strain rate of the specimen which was fractured by a tensile stress impulse, while determining the corresponding launch pressure of the smallest strain rate needs to conduct many tentative tests. In order to solve this problem well, an empirical method which needs to carry out tensile fracture test only once was proposed to calculate the smallest launch pressure and strain rate to fracture the specimen. The method can further predict the strain rate in different launch pressure. The tensile fracture tests of four kinds of aluminum alloy testify that the proposed method is coincident with the experimental results and it is efficient to evaluate the launch pressure and strain rate.]]></description>
<pubDate>2015/3/19 11:35:44</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[CAO Lei,WEN Xuejun,LU Fangyun,QIN Jingui and CHEN Rong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>CAO Lei,WEN Xuejun,LU Fangyun,QIN Jingui and CHEN Rong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201501018]]></guid><cfi:id>19</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Two-dimensional elastic wave propagation characteristics in 
inhomogeneous medium with vertical gradients]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201501019]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The propagation problem of two-dimensional elastic wave  in macroscopical inhomogeneous medium was analyzed. As the physical properties of medium are variable with space, the elastic wave propagation in this medium should be described by a set of inhomogeneous wave equations which conclude the space derivatives of the medium properties. By solving the inhomogeneous wave equations with finite element method, the elastic wave propagation characteristics in inhomogeneous medium whose physical properties vary with vertical gradients were studied and discussed. Results show that the planar elastic wave converges or diverges respectively when the wave velocity ascends or descends symmetrically in the vertical direction. Moreover, when the profile of the wave velocity is arc-hyperbolic secant, the planar elastic wave focuses periodically on the symmetric axis.]]></description>
<pubDate>2015/3/19 11:35:44</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZHENG Xiaomei and ZENG Xinwu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHENG Xiaomei and ZENG Xinwu</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201501019]]></guid><cfi:id>18</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Characteristics of air layer fluctuations on flat bottom air cavity ship with groove]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201604028]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to improve the design effectiveness of large flat bottom ship with groove, a calculation method with combination of RANS equations and VOF two-phase-flow model was proposed for a large flat bottom ship with groove. The dynamic development of air layer in the groove was found. Based on the analysis of air layer fluctuations with different flow velocity, the difference of air layer fluctuation characteristics between three-dimensional and two-dimensional was explained and the fluctuation similar law of air layer was obtained. Numerical results show that: fluctuations of air layer appear in the groove and the wavelength of air layer increases with the increasing of velocity; the wavelength is equal to 0.64 times of the square of velocity; air layer presents phenomenon of coherent and reflection at the side walls of groove, so the wave height and the thickness of local air layer are changed; fluctuations of air layer is satisfied with Froude similarity.]]></description>
<pubDate>2016/9/13 11:24:54</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[WU Hao and OU Yongpeng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WU Hao and OU Yongpeng</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201604028]]></guid><cfi:id>17</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research on methane ignition in lean-fuel and high temperature condition through OH emission measurements]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201706030]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Ignition experiments of methane and air mixture in low equivalence ratio were carried out in a shock tube. Ignition delay in different working conditions was obtained through transient pressure signal and OH emission measurement. The experiment results were compared with the calculation based on detailed methane oxidation mechanism. Analysis results indicate that: there is a linear relationship between the logarithm of ignition delay and the reciprocal of temperature; ignition delay decreases with the reduction of methane concentration; the apparent activation energy of experiment results agrees well with the simulation of detailed mechanism.]]></description>
<pubDate>2018/1/16 17:02:02</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[MA Chengbiao and LIN Qizhao]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>MA Chengbiao and LIN Qizhao</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201706030]]></guid><cfi:id>16</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis on key experimental requirements of Bragg diffractionbased cold atom interferometry gravimeter]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201705022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[A new type of cold atom interferometry gravimeter based on Bragg diffraction was presented, which is able to increase the gravity measurement sensitivity and stability of common Raman atom gravimeters significantly. By comparing with Raman transition, the principles and advantages of Bragg diffraction-based atom gravimeters were introduced. The theoretical model for a time-domain Bragg atom gravimeter with atomic incident direction parallel to the wave vector of Bragg lasers was constructed. Some key experimental requirements for an nth-order Bragg diffraction-based atom gravimeter were deduced, including the temperature of atom sources, the diameter, curvature radius, frequency, intensity, and timing sequence of Bragg pulses, etc. The analysis results were verified by the existing experimental data in discussion. The presented theoretical model and conclusions  provide a meaningful reference for the understanding and construction of a Bragg diffraction-based cold atom gravimeter.]]></description>
<pubDate>2017/11/7 15:44:04</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[HU Qingqing<sup>1,2</sup>, YANG Jun<sup>1,2</sup>, LUO Yukun<sup>1,2</sup>, JIA Aiai<sup>1,2</sup>, WEI Chunhua<sup>1,2</sup> and LI Zehuan<sup>1,2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HU Qingqing<sup>1,2</sup>, YANG Jun<sup>1,2</sup>, LUO Yukun<sup>1,2</sup>, JIA Aiai<sup>1,2</sup>, WEI Chunhua<sup>1,2</sup> and LI Zehuan<sup>1,2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201705022]]></guid><cfi:id>15</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Propagation characteristics of Kelvin source Green function in finite depth water and its application]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201704029]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Present work is focused on the investigation of the propagation characteristics of making wave on the free surface in finite depth water. On the basis of linear hydrodynamic theory, phase function was extracted from the integral representation of 3-D Kelvin source Green function in finite depth water. By adopting the stationary phase analysis method, the constant phase curves and propagation wave patterns were investigated at subcritical and supercritical speed zones respectively. Results indicate that the far field wave systems are composed of transverse and divergent wave patterns if depth Froude number F<sub>h</sub><1. If F<sub>h</sub>>1, only divergent wave patterns are found in the far field. The influence scope of propagating waves above can be determined by the Kelvin angle whose degree changes with depth Froude number and increases to 90 degrees near the critical depth Froude number F<sub>h</sub>=1. Based on the geometrical parameters, such as ship model particulars, relative position of two ships and tank breadth, a discriminant method is proposed for two ship models advancing parallel in calm water of finite depth, which is taken the side wall effects into account in towing tank. In this discrimination method, the interferences of the reflected steady waves from the tank walls, which may act on both ships, are also considered. Under the experimental conditions, the side wall effects are examined in a two-model test.]]></description>
<pubDate>2017/9/12 10:09:51</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[XIAO Wenbin, LIU Wei, CHENG Xinghua and WANG Yongxian]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XIAO Wenbin, LIU Wei, CHENG Xinghua and WANG Yongxian</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201704029]]></guid><cfi:id>14</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Engineering model of projectile penetrating into concrete based on splitting mechanism]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201703029]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Based on the theoretical resistance function from dynamic spherical cavity expansion model and the surface splitting mechanism, a prediction model was proposed for oblique penetration depth of rigid projectiles into concrete targets. In the proposed formula, the dimensionless coefficients denoting the projectile nose geometry were introduced to consider the variation of projectile nose geometry and the cratering depth. A prediction model for the decelerationtime history of the projectile with different nose geometries was obtained. The penetration depths and overload curve of the model were in good agreement with the test results. The research results can provide some help for the oblique penetration trajectory analysis and the design of the projectile head.]]></description>
<pubDate>2017/7/9 11:57:47</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[XUE Jianfeng<sup>1,2</sup>, SHEN Peihui<sup>1</sup> and WANG Xiaoming<sup>1</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XUE Jianfeng<sup>1,2</sup>, SHEN Peihui<sup>1</sup> and WANG Xiaoming<sup>1</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201703029]]></guid><cfi:id>13</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Assessment of COSMIC radio occultation water vapor profile]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201703030]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The specific humidity profiles derived from the GPS（global positioning system） RO (radio occultation) of the COSMIC (constellation observing system for meteorology, ionosphere, and climate) with those from low latitude（30°S~30°N）radiosonde and MACC(monitoring atmospheric composition and climate) reanalysis during the NH (north hemisphere) winters (December, January, and February ) from 2006 to 2012 over the layers from 1000 hPa to 200 hPa were verified. Comparison results  demonstrate that the impact of water vapor on the COSMIC GPS RO inversion is very large, especially over the tropical and low troposphere. And the COSMIC GPS RO observations below 850 hpa may not be suitable for the assessment of other observations. ]]></description>
<pubDate>2017/7/9 11:57:47</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[CHEN Zhiping<sup>1</sup>, LUO Jia<sup>1,2</sup>, XIAO Xiao<sup>1</sup> and SUN Fangfang<sup>1</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>CHEN Zhiping<sup>1</sup>, LUO Jia<sup>1,2</sup>, XIAO Xiao<sup>1</sup> and SUN Fangfang<sup>1</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201703030]]></guid><cfi:id>12</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Experimental study for the influence of groove configuration on plate air layer drag reduction]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201702024]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The influence of speed and air flow on the flat gas reservoir law of drag reduction was investigated by an experiment of plate with air injection, and the air layer formation in different groove configuration was observed by an underwater imaging system. The results show that the grooves increase the resistance of the plate without air; the resistance of flat plate can be reduced with the injection of air, and there is an optimal air flow; the optimal air flow decreases with the rise of the groove depth, and the absolute drag reduction rate decreases with the increase of the speed; the configuration of the groove is an effective measure to maintain the stability of the plat bottom surface air layer; the appropriate groove configuration significantly improves the flow field at the bottom of the flat plate and increases the effect of the flat drag reduction with air injection; the absolute drag reduction rate reaches more than 40% under the optimal air flow when the Fr is 0.119.]]></description>
<pubDate>2017/5/11 16:56:56</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[WU Hao, DONG Wencai and OU Yongpeng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WU Hao, DONG Wencai and OU Yongpeng</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201702024]]></guid><cfi:id>11</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Reduced mechanism for lean-fuel methane oxidation through  sensitivity analysis]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201702025]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Production rate of important reactants was calculated through grimech 3.0 mechanism in methane oxidation. A sensitivity analysis was employed to determine important elementary reactions in oxidation. A reduced kinetics mechanism for lean methane oxidation was built, including 16 species and 31 steps. Simulation results based on the reduced mechanism were compared with the calculation results of grimech 3.0. The reduced mechanism is suitable for lean fuel condition at an equivalence ratio lower than 0.2.]]></description>
<pubDate>2017/5/11 16:56:56</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[MA Chengbiao and LIN Qizhao]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>MA Chengbiao and LIN Qizhao</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201702025]]></guid><cfi:id>10</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Radiation-driven Richtmyer-Meshkov instability with different material ablators]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201702026]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Fluid interface instability seriously affects the performance of ICF (inertial confinement fusion) capsule implosion, doped CH plastic or Be (Beryllium) ablator is generally employed in ICF capsule. The RM(Richtmyer-Meshkov) instability occurs when the radiation-generated shock penetrates the rippled inner surface of ablator. In order to explore the resistance ability to RM instability with Be or CH plastic as ablator, theoretical analysis and numerical simulation were carried on the evolution of RM instability. Theoretical analysis indicates that the linear growth rate of RM instability depends on the radiation temperature, the wavelength，the initial amplitude of perturbation and the density of ablator. The hydrodynamics process of high temperature (above 100 eV) blackbody spectrum X-ray ablating rippled interface of Be/Foam and CH/Foam target is simulated by a radiation hydrodynamic code. Simulation results show that the Be ablator with higher density has stronger resistance ability to RM instability than CH plastic ablator. The results are useful for capsule design in inertial confinement fusion.]]></description>
<pubDate>2017/5/11 16:56:56</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[XU Binbin, TANG Wenhui, MA Yanyun, YANG Xiaohu, GE Zheyi and ZHAO Yuan]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XU Binbin, TANG Wenhui, MA Yanyun, YANG Xiaohu, GE Zheyi and ZHAO Yuan</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201702026]]></guid><cfi:id>9</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Corrosion potential distribution research of metal plate in laminar flow]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201806022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to study the electrostatic field in the flowing medium, the model of metal plate in the laminar flow was built on the basis of the related knowledge of electrochemistry and fluid mechanics, and the analytic expression of corrosion potential based on point charge source in the three-layered media model was deduced by using the expansion of Bessel function and its inverse operation, then the expression of electric field was obtained in the meantime. The corrosion potential of metal plate varying from different flow rates at arbitrary seawater depth was calculated by the listed expression. The simulation result was tested and verified through experiment. The result shows that the model in current density generated in the electrochemical reaction under laminar flow conditions is in better agreement with the experimental data, and the electric field distribution changes with the flow velocity and the length of the laminar flow direction.]]></description>
<pubDate>2019/1/17 15:43:46</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZHANG Jianchun and WANG Xiangjun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Jianchun and WANG Xiangjun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201806022]]></guid><cfi:id>8</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Energy conversion efficiency of direct current helical coil electromagnetic launchers]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201805016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Considering the factors such as commutation process, residual energy of muzzle and Joule loss of resistance,  the equivalent circuit model was established, and the efficiency of conventional helical launcher and a novel helical launcher was analyzed by theoretical, numerical and experimental methods, respectively. The results show that the Joule heat loss is the largest, followed by the magnetic energy loss of commutation, while the muzzle residual magnetic energy loss is minimal. The energy conversion efficiency of the launcher can be effectively improved by reducing the resistance, increasing the mutual inductance gradient, reducing the number of turns in the stator coil unit, and increasing the operating current, etc. However, larger armature coil turns will also bring greater magnetic energy of commutation and muzzle magnetic energy loss, resulting in barrel erosion or even damage, energy release and low efficiency. Besides, the theoretical efficiency of the helical launcher is higher than the one of the railgun under constant current operating mode. The theoretical efficiency of the novel helical launcher is close to 100%, which is expected to be implemented in the case of superconductivity or lower resistance in the future.]]></description>
<pubDate>2019/1/21 16:09:52</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[YANG Dong<sup>1,2</sup>, LIU Zhenxiang<sup>3</sup>, SHU Ting<sup>1</sup>, YANG Lijia<sup>1</sup>, SHEN Zhi<sup>3</sup> and OUYANG Jianming<sup>3</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YANG Dong<sup>1,2</sup>, LIU Zhenxiang<sup>3</sup>, SHU Ting<sup>1</sup>, YANG Lijia<sup>1</sup>, SHEN Zhi<sup>3</sup> and OUYANG Jianming<sup>3</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201805016]]></guid><cfi:id>7</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of the incident frequency on the interactions between high power microwave and plasma]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201804008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The interaction between the plasma and the high power microwave was studied with the wave equation, the electron transport equation and the heavy species transport equation. The change process of the electron density and the electric field in the plasma was calculated, and the dispersion effect of the incident frequency in the interactions was especially analyzed. Result shows that the electron density and the electric field intensity will change suddenly due to the interactions of HPM(high power microwave) and plasma, in which the mean electron density will increase from 1×10<sup>9</sup> m<sup>-3</sup> to 1×10<sup>19</sup>m<sup>-3</sup>, and the average electric field strength will decrease from the original value to zero abruptly in a very short time. Moreover, the threshold field strength and minimum generation time in the changing process are considered to study the dispersion effects. As a result, the threshold strength and generation time are vary with the frequency. In addition, it can be admitted that the threshold strength increases linearly and the generation time grows nonlinearly with the frequency of incident wave with further research.]]></description>
<pubDate>2018/9/17 11:14:35</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[LI Zhigang<sup>1</sup>, CHENG Li<sup>1</sup>, MA Zhiwei<sup>2</sup>, WANG Jiachun<sup>1</sup> and SHI Jiaming<sup>1</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Zhigang<sup>1</sup>, CHENG Li<sup>1</sup>, MA Zhiwei<sup>2</sup>, WANG Jiachun<sup>1</sup> and SHI Jiaming<sup>1</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201804008]]></guid><cfi:id>6</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Modified integral equation method for carrier′s induced magnetic field solving]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201803016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aimed at meshing the ferromagnetic objects with both surface elements and volume elements, a magnetic integral equation method was proposed to solve the induced magnetic field of complex-geometry carriers. Numerical results of the shell sphere and solid sphere model obtained by the proposed method can match its analytical solution well, and the ARE (average relative error) is less than 0.27%; the induced magnetic field of the ship model can be modeled well with few hybrid elements, which demonstrates the advantage of the proposed method. Based on the proposed method, the AREs between numerical and experimental results of the simple submarineequipment mockup model and the submarine mockup model are both less than 2%. Magnetism deviations caused by the equipment model are displayed by the comparison between computational results of the simple submarineequipment mockup model and the simple submarine mockup model. Thus carrier′s induced magnetic field can be calculated by the proposed method effectively, which is practically valuable.]]></description>
<pubDate>2018/7/11 12:40:21</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZHU Wubing, ZHUANG Jinwu, ZHAO Wenchun, LIU Shengdao and ZHOU Guohua]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHU Wubing, ZHUANG Jinwu, ZHAO Wenchun, LIU Shengdao and ZHOU Guohua</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201803016]]></guid><cfi:id>5</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Quantitative analysis of voltage drop of high voltage and large capacity pulse capacitor during voltage holding process]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201904005]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Focused on the voltage drop and energy loss of metallized film pulse capacitor in actual use, which leads to the decreases of stored energy and energy density of pulsed power supply during the long voltage holding process after charging, based on the experimental data of a high voltage and high capacity pulse capacitor and the relationship between conductivity characteristics, self-healing characteristics, polarization characteristics and energy loss, the quantitative relationship between conductivity and voltage drop was derived and the conductivity measurement was carried out, the quantitative relationship between self-healing and voltage drop was derived and the life test was conducted, the quantitative relationship between relaxation polarization and voltage drop was described and the simulation was completed. The results show that the proportions of dielectric leakage, self-healing and relaxation polarization in voltage drop are 29.6%, 11.75% and 58.35%, respectively. The main factor which leads to voltage drop is relaxation polarization.]]></description>
<pubDate>2019/7/18 0:00:00</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[ZHU Bofeng, LU Junyong, ZHANG Xiao, WANG Xin, DAI Yufeng, MA Tao and WANG Jie]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHU Bofeng, LU Junyong, ZHANG Xiao, WANG Xin, DAI Yufeng, MA Tao and WANG Jie</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201904005]]></guid><cfi:id>4</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Automatic selection algorithm for maximum truncate wavenumber of acoustic wavenumber integration method]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201904025]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to improve the computational stability and accuracy of the acoustic wavenumber integration propagator matrix approach, the automatic selection algorithm for maximum truncate wavenumber based on predictor-corrector theory was proposed. The algorithm has the advantages of simple, reliable and small computational load. The test results of acoustic spherical wave in free space show that the stability of propagator with the order of bottom to top is relatively poor, the non-physical divergence of the wavenumber kernel function is easy to appear above the sound source, so it was necessary to use different truncate wavenumbers at different depths to calculate the correct result; while the calculation stability and precision of propagator with the order of bottom to source and top to source respectively reach higher levels.]]></description>
<pubDate>2019/7/18 15:28:49</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[LIU Wei, XIAO Wenbin, CHENG Xinghua, WANG Yongxian and ZHANG Lilun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Wei, XIAO Wenbin, CHENG Xinghua, WANG Yongxian and ZHANG Lilun</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201904025]]></guid><cfi:id>3</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Influence of temperature on the cathodic protection and corrosion electrostatic field of ships]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201904026]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Oxygen concentration and seawater conductivity are important factors affecting the corrosion behavior in seawater, and these two factors mainly depend on salinity and temperature of seawater. The model of impressed current cathodic protection and corrosion electrostatic field was established by using the boundary element method. The effects of oxygen concentration, seawater conductivity and diffusion coefficient of oxygen on the corrosion related electrostatic field of the ship at different seawater temperatures were studied. The results show that the peak value of the corrosion electrostatic field decreases with the increase of temperature. When the output current of the two pairs of anodes are 13.5 A and 8 A, respectively, the hull and the rudder are in overprotection at low temperatures and underprotection at high temperatures accordingly, but the propeller and the shaft get perfect protection at all temperatures.]]></description>
<pubDate>2019/7/18 15:28:49</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[XU Qinglin<sup>1</sup>, WANG Xiangjun<sup>1</sup>, ZHANG Jianchun<sup>1</sup>, LIU Chunyang<sup>1</sup> and MIAO Hai<sup>2</sup>]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XU Qinglin<sup>1</sup>, WANG Xiangjun<sup>1</sup>, ZHANG Jianchun<sup>1</sup>, LIU Chunyang<sup>1</sup> and MIAO Hai<sup>2</sup></atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201904026]]></guid><cfi:id>2</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Transient static electrical field analysis of non-steady-state diffusion under galvanic corrosion]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201903022]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to analyze the static electric field distribution of non-steady-state process under concentration polarization conditions,the Laplace transform was used to solve the change of oxygen concentration on the surface of the electrode based on the Fick second law. The current density of galvanic corrosion controlled by oxygen concentration was analyzed through Faraday law, in the basis of which the instant potential and static electric field in any position of electrolyte can be obtained through current element, and then to verify the correctness by experimental results. The results show that the static electric field and potential decrease with time and reach a steady state finally, while the current density decreases with the decrease of oxygen concentration.]]></description>
<pubDate>2019/6/13 15:22:19</pubDate>
<category><![CDATA[Physics]]></category>
<author><![CDATA[WANG Xiangjun, ZHANG Jianchun and XU Qinglin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Xiangjun, ZHANG Jianchun and XU Qinglin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/201903022]]></guid><cfi:id>1</cfi:id><cfi:read>true</cfi:read></item>
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