裂变碎片核发射中子能谱及角分布的模拟计算  

Monte-Carlo Simulation of Energy and Angular Distributions of Emitted Neutrons From a Given Fission Fragment

作　　者：屈丛会[1] 黎光武[1] 徐家云[2] 顾牡[3] 刘小林[3] 顾先宝[1] 邵新生[2] 

机构地区：[1]中国原子能科学研究院核物理研究所,北京102413 [2]四川大学物理科学与技术学院,四川成都610064 [3]同济大学波尔固体物理研究所,上海200092

出　　处：《原子能科学技术》2008年第6期481-484,共4页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(10475068,10476018)

摘　　要：采用蒙特卡罗方法研究252Cf自发二分裂变过程中裂变碎片核发射的中子能谱和中子角分布。文中给出了模拟计算的条件、步骤和模拟结果,详细分析了实际测量中252Cf自发二分裂变碎片核发射的中子能谱之间的相互干扰。该模拟分析与测量特定裂变碎片核的发射中子谱的实验研究密切配合,对相关实验具有指导性参考价值。The neutron angular and energy distributions were calculated by using Monte- Carlo method for a given 252^Cf binary fission fragment. The conditions and steps of the calculation were specified, and the results were presented. The interference of the neutrons from one fragment to those from the complementary fragment was analyzed. This simulation could work with the measured neutron spectra for a given fission fragment and give a theoretical reference for the relevant experimental measurements.

关 键 词：蒙特卡罗方法 核裂变 裂变碎片 中子发射 

分 类 号：TL571.54[核科学技术—核技术及应用]