[1]丁文,窦玉玲,张国光,等.包装物对爆炸物中子检测的影响[J].爆破器材,2010,39(06):37-40.
　DING Wen,DOU Yuling,ZHANG Guoguang,et al.Study on the Influence of Different Containers in Explosive Detection[J].EXPLOSIVE MATERIALS,2010,39(06):37-40.
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包装物对爆炸物中子检测的影响()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
39
期数:
2010年06
页码:
37-40
栏目:
出版日期:
2010-12-20

文章信息/Info

Title:
Study on the Influence of Different Containers in Explosive Detection
文章编号:
4304
作者:
丁文1; 窦玉玲3; 张国光3; 吴腾芳2; 沈瑞琪1
（1.南京理工大学，江苏南京210094；2.解放军理工大学工程兵工程学院，江苏南京210029；3.中国原子能科学研究院，北京102413）
Author(s):
DING Wen①;  DOU Yuling③;  ZHANG Guoguang③;  WU Tengfang②;  SHEN Ruiqi①
①Nanjing University of Science and Technology (Jiangsu Nanjing, 210094) ②Engineering Institute of Engineer Corps, PLA University of Science & Technology (Jiangsu Nanjing, 210007) ③China Institute of Atomic Energy (Beijing, 102413)
关键词:
中子管; 热中子; 俘获γ射线; 爆炸物; 包装物
Keywords:
neutron generator;  thermal neutron;  capture γ ray;  explosive;  containers
分类号:
X924.3
文献标志码:
A
摘要:
文章概述了目前主要的爆炸物中子检测方法，介绍了用热中子俘获γ射线法（TNA法）检测爆炸物的原理，用模拟实验装置对模拟爆炸物进行了检测，得到了被测物的俘获γ射线能谱。实验装置采用d-D中子管产生2.5MeV的快中子,再经慢化之后得到热中子，并采用多个NaI探测器提高检测效率。着重对TNA法中不同外包装物材料以及多层复合外包装物材料对探测结果的影响进行了探索研究和结果分析，发现铜外壳对γ射线的屏蔽较大程度地降低了检出率，而例如聚四氟乙烯等塑料外壳也可能造成类似的影响。
Abstract:
This article summarized the current major neutron based explosive detective methods, introduced the principle of the thermal neutron capture γ-ray method (TNA). The capture γ-ray spectrum of measured objects was obtained using an experimental device to detect simulated explosives. The experimental device used thermal neutron produced by moderation of 2.5MeV fast neutron yielded by d-D neutron tube, and a number of NaI detectors were used to improve detection efficiency. This article focused on the impact of different overpack materials and multi-layer composite overpack on detection results of TNA method. It is shown that copper shell will lower the detection rates by shielding a great degree of the γ-ray, and plastic shells such as polytetrafluoroethylene (PETF) may also cause the similar effect.

参考文献/References:

［1］仇九子．用中子检查隐藏爆炸物的物理学原理［J］.现代物理知识，1998, 10 (1)：17-18. ［2］贾文宝．可移动式中子监测隐性爆炸物系统的初步探索与研究［J］.原子核物理评论 ，2005，22 (1)：76-78. ［3］Tsahi Gozani. The role of neutron based inspection techniques in the post 9/11/01 era［J］.Nuclear Instruments and Methods in Physics Rosearch B, 2004，213:460-463.［4］景士伟，杨璐，李文杰，等.利用中子技术检测爆炸物的实验研究［J］.东北师大学报 (自然科学版) ,2008,6（2）：47-50.［5］Claudio Bruschini. Commercial Systems for the Direct Detection of Explosives(for Explosive Ordnance Disposal Tasks). Explo Study, Final Report［OL］. ［17/2/2001］.Http://diwww.epfl.ch/lami/detec/.

备注/Memo

备注/Memo:
收稿日期：2010-07-08 作者简介：丁文（1982~）女，博士在读，讲师，主要从事含能材料及其技术方面的研究。
更新日期/Last Update: 2011-04-11