【作者】 肖坤祥； 金大志； 向伟； 谈效华；

【Author】 XIAO Kunxiang,JIN Dazhi,XIANG Wei,TAN Xiaohua Institute of Electronic Engineering,Chinese Academy of Engineering Physics,Mianyang 621900

【机构】 中国工程物理研究院电子工程研究所；

【摘要】 对伴随α粒子法检测隐藏爆炸物的基本原理作了介绍,根据项目需求,研制了外形尺寸为Φ76mm×1100mm的中子发生器,采用中子管离子源加高压,靶接地的设计方式,便于安装α粒子探测器。靶与束流入射方向成45°角度,以便于探测器接收更多的α粒子,提高探测效率。经试验测试表明,中子产额在3×10~7～5×10~7 n/s范围,中子发生器稳定工作已超过100小时,研制的中子发生器性能稳定,满足了设计要求。更多还原

【Abstract】 The basic principle and method of neutron detecting latent explosive are mtroduced and analyzed.A neutron generator which diameter is 76 millimeters and length is 1100 millimeters,is designed for the demand of project.For adapting detector to install in the generator,the high voltage is added in Penning ion source and the target is connected with ground potential.In order to improve the detector efficiency,the angle of ion beam and target is 45 degree.The test results show that the generator has good stabilization,and has been used for over 100 hours in the output from 3×107 neutron per second to 5×107 neutron per second.更多还原