一种违禁品背散射检测方法  

A back-scattering contraband detection method

作　　者：向新程[1] 郑健[1] 郑欣[1] 王振涛[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《核电子学与探测技术》2007年第2期203-206,共4页Nuclear Electronics & Detection Technology

摘　　要：描述了一种以低活度133Ba为射线源的便携式背散射检测仪,可以对物体的藏匿空间内是否存在违禁品进行检测,并根据背散射能谱的特点对违禁品的物性做出一些判断;论述了检测仪的系统设计和简化模型的MCNP仿真,给出了检测仪的一些实验结果。A portable back-scattering detector using ^133Ba as the radiation source is described. The detector can find out whether there is contraband in a hidden space. Some information about the type of the contraband can be given according to the back-scattering spectra. The prototype design of the detector is described, MCNP simulation and physics analysis based on a simplified model is done, and some experiment resuhs are also given.

关 键 词：背散射 违禁品检测 ^133Ba 双能检测 

分 类 号：TP274.51[自动化与计算机技术—检测技术与自动化装置]