用蒙特卡罗方法计算快中子屏蔽体的厚度

文中使用蒙特卡罗方法，模拟了３００ｋｅＶ氘束流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。

Calculation of the Thickness of Fast-Neutrons Shield with the Monte Carlo Method

In the Monte Carlo Calculation,we simulate the neutron tracks or histories By means of the random nature of the neutron interaxctions with the medium of Shield which is a shell of the sphere made of Iron,and neutruons are produced by the T (d,n)4 He reaction with 300 ke V deuteron beam energy .By the explanations and analyses Of results based on the Monte Carlo Calculation,we obeanin the optimal thickness of shield,which slows down neutrons from 14 Me V 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.