传统的X射线无损检测应用广泛,但X射线对低原子序素构成为主的爆炸物不能进行有效的甄别;中子穿透能力较强,能和原子核相互作用产生特征γ射线,因此中子无损检测方法能有效弥补X射线无损检测方法的不足.介绍了几种常用的中,子无损检测方法,并采用脉冲快热中子法(为PFTNA)的方法对模拟爆炸物进行了测量.实验结果表明,利用密封中子发生器和采用PFTNA方法进行爆炸物检测是可行的.
Traditional X-ray scatheless detecting method is used widely, but it is not useful to discriminate explosive consisting of low Z atomic elements. The penetrability of neutron is much better, and it can interact on atomic nucleus to emit characteristic γ ray. So neutron scatheless detecting methods can the used to detect the low Z atomic elements. In this paper, several neutron scatheless detecting methods are introduced briefly, and the principium experiment using Pulse Fast Thermal Neutron Analysis(PETNA) to detect a kind of explosive simulacrum is carried out. The experiment results show that PFTNA based on the sealed neutron generator is feasible to detect explosive.
参考文献
| [1] | Qiu Jiuzi.Modern Physics Knowledge,1998,10(1):17(in Chinese).(仇九子.现代物理知识,1998,10(1):17.) |
| [2] | Jia Wenbao.Nuclear Physics Review,2005,22(1):76(in Chinese).(贾文宝.原子核物理评论,2005,22(1):76.) |
| [3] | Tsahi Gozani Nucl Instr and Meth,2004,B213:460. |
| [4] | Claudio Bruschini.Commercial Systems for the Direct Detection of Explosives(for Explosive Ordnance Disposal Tasks)Explo Study,Final Report,17/2/2001.Email:Claudio.Bruschini(AT)epfl.ch.Web:http://diwww.epfl.ch/lami/de tec/. |
| [5] | Lunardon M,Nebbia G,Pesente S.Nucl Instr and Meth,2004,B213:544. |
| [6] | Kuznetsov A V,Evsenin A V,Vakhtin D N.Proceedings of Portable Neutron Generators and Technologies on Their Base,18-22 October,2004,Moscow,Russia,VNIIA:1. |
| [7] | Nebbia G,Pesentea S,Lunardon M.Nucl Instr and Meth,2004,A533:475. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%