以中子作外源的假想核弹头主动探测

计算物理 ›› 2003, Vol. 20 ›› Issue (1): 71-75.

以中子作外源的假想核弹头主动探测

伍钧¹, 刘成安², 胡思得², 张本爱², 田东风²

1. 中国工程物理研究院研究生部, 北京 100088;
2. 北京应用物理与计算数学研究所, 北京 100088

收稿日期:2001-06-19 修回日期:2002-04-23 出版日期:2003-01-25 发布日期:2003-01-25
作者简介:伍钧(1961-),男,江苏南京,副研,博士生,从事军备控制及核物理方面的研究.

Numerical Simulation and Analyses on Actively Detecting Nuclear Warheads with Neutron Sources

WU Jun¹, LIU Cheng-an², HU Si-de², ZHANG Ben-ai², TIAN Dong-feng²

1. Graduate College of China Academy of Engineering Physics, Beijing 100088, China;
2. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

Received:2001-06-19 Revised:2002-04-23 Online:2003-01-25 Published:2003-01-25

摘要/Abstract

摘要： 通过对不同入射能量的中子在假想的核弹头中的输运计算,分析了弹头中的裂变材料芯部的核裂变、各层对中子的吸收和(n,xn)反应以及出壳中子随角度的变化,论证了以外中子源(不随时间变化的外源)对弹头作主动探测的可行性.通过对14 1MeV脉冲中子源和产生的缓发中子在模型中的输运计算,分析了用脉冲外中子源产生的缓发中子探测核弹头的可行性.

关键词: 主动探测, 缓发中子, 核弹头

Abstract: Neutron transport numerical simulation of different energy of neutron sources is performed in hypothetical nuclear warhead models.Three methods of actively warhead detection are analyzed and the feasibility of actively detecting warheads with three types of neutron sources is studied.With 14.1 MeV pulse neutron source,distribution of delayed neutron flow with time is studied.Results show that the warheads can be detected without exposing the sensitive information of nuclear weapons by detecting the delayed neutrons.

Key words: active detection, delayed neutron, nuclear warhead

中图分类号:

O571.53

伍钧, 刘成安, 胡思得, 张本爱, 田东风. 以中子作外源的假想核弹头主动探测[J]. 计算物理, 2003, 20(1): 71-75.

WU Jun, LIU Cheng-an, HU Si-de, ZHANG Ben-ai, TIAN Dong-feng. Numerical Simulation and Analyses on Actively Detecting Nuclear Warheads with Neutron Sources[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2003, 20(1): 71-75.