关于检测爆炸物的数字化脉冲中子发生器的研制

A digital pulse neutron generator for the explosives detection

利用陶瓷制成靶中子管,研制了检测爆炸物的数字化脉冲中子发生器.该中子发生器具有小型便携、数字化控制和远程控制功能,可以产生直流中子、脉冲中子和复合脉冲中子.最大中子产额可以达到2×108个/s,最小中子脉冲宽度为10μs,最大脉冲频率为10kHz.发生器的中子产额和中子时间谱经中国工程物理研究院测试,满足PFTNA中子检测法检测爆炸物的要求.此外,发生器还可以应用于其他中子测试以及工业在线中子多元素分析领域.

Preliminary experimental results of digital DC/pulse neutron generator based on aceramic drive-in target neutron tube for explosives detection are presented. The generator is a portable and on- off neutron source, and it can be controlled by remote PC. The generator can produce DC neutrons, pulse neutrons and multiple pulse neutrons. The maximum neutron yield is 2 × 108 n/s, the minimum pulse width is 10 ffs and the maximum pulse frequency is 10 kHz. Neutron yield and time-spectrum is measured by China Academy of Engineering Physics. The generator is suitable for explosive detection with PFTNA technology,and it can be used in other areas such as reactor measurements and on-line industrial test systems.