| 引用本文: | 戴宏毅,杨化中,苏桐龄.用蒙特卡罗方法计算快中子屏蔽体的厚度.[J].国防科技大学学报,1996,18(1):129-134.[点击复制] |
| Dai Hongyi,Yang Huazhong,Su Tongling.Calculation of the Thickness of Fast-Neutrons Shield with the Monte Carlo Method[J].Journal of National University of Defense Technology,1996,18(1):129-134[点击复制] |
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| 用蒙特卡罗方法计算快中子屏蔽体的厚度 |
| 戴宏毅1, 杨化中2, 苏桐龄2 |
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(1.国防科技大学 应用物理系 湖南 长沙 410073;2.兰州大学现代物理系 兰州 730000)
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| 摘要: |
| 文中使用蒙特卡罗方法，模拟了 300keV 氚束流T（d ，n)4He中子源发出的中子在球壳屏蔽体介质铁中的输运规律；对计算结果进行解释和分析，得出将中子能量从 14MeV 慢化到 1MeV 以下所需的最佳屏蔽厚度。所得结果与国际上同类屏蔽体所取参数相一致，具有一定的应用参考价值。 |
| 关键词: 蒙特卡罗模拟，T（d ，n)4He 中子源，直接模拟法，透射比，慢化 |
| DOI： |
| 投稿日期：1995-04-08 |
| 基金项目: |
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| Calculation of the Thickness of Fast-Neutrons Shield with the Monte Carlo Method |
| Dai Hongyi1, Yang Huazhong2, Su Tongling2 |
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(1.Department of Applied Physics，NUDT，Changsha，410073;2.CDepartment of Modern Physics，Lan Zhou University，Lan Zhou，730000)
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| Abstract: |
| 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)4 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. |
| Keywords: Monte Carlo simulation,T（d ,n)4 He neutron source,direct simulation method,transmittance,slowdown |
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