伴随粒子法检测隐藏爆炸物安检仪研发

为应对日益增长的恐怖活动.研制了基于伴随α粒子的中子飞行时间技术的隐藏爆炸物安全检测仪。介绍了该安检仪检测的工作原理.详细阐述了安检仪的伴随α粒子探测器的DT中子管、屏蔽系统、支撑平台、阵列γ探测器、信号获取和处理系统、数据库、传输装置及外壳的研制过程。利用研制的安检仪对常用炸药和化学战剂进行了检测.结果表明该安检仪可以满足实际应用的需求。该仪器不仅可以用于安检通道内的爆炸物检测.通过训练也可以用于毒品和危化品的检测。

Development of a hidden explosives security check instrument based on associated particles technique

In response to the growing terrorist activities, a security check instrument for explosives detection based on associated particles technique (APT)/neutron time of flight(TOF) has been developed. This paper describes the instruments working principle and the development of his process. The instrument can be remotely controlled from any PC-compatible computer. Inside is an APT neutron generator with a 33 matrix of semiconductor detectors of associated alpha-particles, the shielding protection system of neutron and gamma-ray, support platform, arrayed NaI(Tl)-based detectors of gamma-rays, fully-digital data acquisition electronics, data analysis and decision-making software, and transmission device. The common explosives and chemical warfare agents were detected by security check instrument. Results show that the instrument can meet the needs of practical application. The instrument is mainly used to detect explosives in luggage at check routeway, and it can also be trained to detect other hazardous materials, such as chemical/toxic/drug materials, if their chemical composition is in any way different from that of the surrounding materials.