研制快速、及时、便携的爆炸物检查的设备是我国也是国际社会的迫切需求。爆炸物都含有多种化学元素,例如H、C、N、O等,但它们的含量和元素比率各不相同,区别于其他非爆炸物,这就为鉴定和区别它们提供了可能。利用快中子检测爆炸物的方法是通过测量中子与各元素核反应中的非弹反应(n,n′,γ)释放的特征γ射线来区分爆炸物和非爆炸物。实验示意图如图1所示。中子源采用D-T中子发生器。图1实验装置示意图利用探测器得到的谱图分析C、N、O的比例,从而得出爆炸物的种类。图2为模拟爆炸物的 The development of equipment for the rapid, timely and portable inspection of explosives is an urgent need of our country and of the international community. Explosives contain a variety of chemical elements, such as H, C, N, O, but their content and elemental ratio vary from other non-explosive, which provides the possibility to identify and distinguish them. The method of detecting explosives using fast neutrons is to distinguish explosives from non-explosives by measuring characteristic γ-rays emitted by non-bomb reaction (n, n ’, γ) in neutron-elemental nuclear reactions. Experimental diagram shown in Figure 1. The neutron source uses a D-T neutron generator. Figure 1 Schematic diagram of the experimental device Using the spectrum obtained by the detector analysis of C, N, O ratio, resulting in the type of explosive. Figure 2 shows the simulated explosives