超瞬发临界系统有限裂变链集体效应  

Collective Effect of Finite Fission Chains at Super Prompt Critical

作　　者：高辉[1,2] 谢奇林[1,2] 刘晓波[1,2] 范晓强[1,2] 

机构地区：[1]国工程物理研究院中子物理学重点实验室,四川绵阳621900 [2]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《原子能科学技术》2012年第B09期8-10,共3页Atomic Energy Science and Technology

基　　金：中国工程物理研究院科技发展基金资助项目(2011B0103018)

摘　　要：本文以点堆模型为基础建立了集体有限裂变链模拟程序,以宏观方法研究有限裂变链在核系统内部的发展演化规律,并得到了实验结果的验证。采用该程序计算了有限裂变链的集体链长,得到了其分布规律。结果表明,平均集体链长随源强的增加而增大,随反应性的增加而减小。Based on the model of point reactor,a program was constructed to simulate collective effect of finite fission chains and was proved by experimental result.With the program,the evolution of finite fission chains in reactor was researched using macroscopic method.Collective lifetime of chains was calculated and its distribution was deduced.The calculated result demonstrates that the mean of collective lifetime of chains is longer with increasing intensity of neutron source and is shorter with increasing reactivity.

关 键 词：有限裂变链 集体链长 超瞬发临界 

分 类 号：TL329[核科学技术—核技术及应用]