基于BF_3正比管的宽量程脉冲中子探测技术  

Wide range pulsed neutron detection technology based on BF_3 proportional counters

作　　者：马烈华[1] 向艳军[1] 艾杰[1] 马景芳[1] 李涛[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《强激光与粒子束》2017年第9期136-141,共6页High Power Laser and Particle Beams

摘　　要：介绍了一种基于BF_3正比计数管的宽量程脉冲中子探测技术。该技术采用多通道、组合式的BF_3管阵列中子探测器组,以适应产额变化范围较宽的脉冲中子测试场合,并同时兼顾测量下限。基于该技术研制了一套BF_3阵列中子探测系统并应用于脉冲中子源的测试,实验结果表明,该系统的脉冲中子测量范围可达5个数量级(56~8×10~6),测量下限低、输出信号清晰,证明了该技术的可行性和有效性。A wide range pulsed neutron detection technology based on BF3 proportional counters is introduced. In this tech- nology, multi-channel and modular BF3 tube array neutron detectors are adopted to achieve a wide range of pulsed neutron test applications, and the lower limit of measurement is also taken into account. Based on this technology, a set of BF3 array neutron detection system was developed and applied to the testing of pulsed neutron source. The experimental results show that the pulsed neutron measurement range of the system can reach the range of 56 to 8 × 10^6 , the lower limit of measurement is low and the output signal is clear, indicating the feasibility and effectiveness of the technology.

关 键 词：BF3正比计数管 中子产额 中子探测 

分 类 号：TL816[核科学技术—核技术及应用] TL811