一种基于快中子的化学战剂无损检测技术

Nondestructive chemical weapon detection technology based on fast neutron

为了检测标识不清的弹体内的装药成分是否含有化学战剂,建立了一套基于伴随α粒子技术的快中子化学战剂无损检测系统。系统的主要部分包括D-T中子源、α粒子探测器、γ探测器及其屏蔽体以及相应的电子学处理系统等。利用该系统对沙林、VX、芥子气和亚当氏剂四种具有代表性的化学战剂进行测量,获得了四种化学战剂的14 MeV中子诱发的特征γ谱。谱分析的结果表明,除了As元素外,P,F,S,Cl元素的特征γ峰清晰可见,说明采用这种方法可以实现化学战剂的无损检测。

In order to detect the chemical weapon contained in the unmarked ammunition,a fast neutron chemical weapon detection system based on associatedαparticle technology(APT)was developed.The detection system included an associated particle DT neutron source,anαparticle detector,aγdetector and shielding as well as an electronics signal acquiring and processing system.Four types of chemical weapons including sarin,VX reagent,mustard gas and adamsite reagent were measured by the detection system.The characteristic gamma spectra induced by 14 MeV neutron were obtained.According to the analysis of the spectra,the characteristic gamma peaks of phosphorus(P),fluorine(F),sulfur(S)and chlorine(Cl)were clearly measured except arsenic(As).These results showed the APT could reach the goal of nondestructive detecting chemical weapon.