基于硅光电二极管和NaI(Tl)晶体的低功耗γ射线探测系统研制  

Low Powerγ-Ray Detection System Based on Silicon Photodiode and NaI(Tl)Crystal

作　　者：罗鹏 宋文冬 杨佩 栾江磊 李佳瑶 李忠良 LUO Peng;SONG Wen-dong;YANG Pei;LUAN Jiang-lei;LI Jia-yao;LI Zhong-liang(Shaanxi Qinzhou Nuclear and Radiation Safety Technology Co.,Ltd.,Xi’an 710054,China;School of Nuclear Science and Technology,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]陕西秦洲核与辐射安全技术有限公司,西安710054 [2]西安交通大学核科学与技术学院,西安710049

出　　处：《现代应用物理》2020年第2期77-80,85,共5页Modern Applied Physics

摘　　要：利用硅光电二极管和NaI(Tl)晶体研制了一套低功耗γ射线探测系统,设计了包括两级前置放大电路、阈值比较电路、单片机电路和电源监测电路的探测系统,并对该系统的性能进行了测试和分析。结果表明,该γ射线探测系统的综合静态功率较低,约为6 mW,可提高电源使用效率和系统稳定性,减小了便携式辐射探测器的体积。A low powerγ-ray detection system is developed by using silicon photodiode and NaI(Tl)crystal.The detection system circuit is designed,including two-stage pre-amplifier circuit,threshold comparison circuit,single chip microcomputer circuit,and power monitoring circuit.The performance ofγ-ray detection system is tested and analyzed.The results show that the integrated static power of the detection system is about 6 mW.The stability and power efficiency of the radiation detection system can be improved,and the volume of portable radiation detector is reduced.

关 键 词：硅光电二极管 辐射探测 低功耗 便携式 

分 类 号：TN710.2[电子电信—电路与系统]