α/β探测器改进设计  

Improved Design of anα/βDetector

作　　者：李元东 邓晓钦[1] 徐斌[1] 王亮[1] 徐僳 周俊宇[1] 曾国强[2] 葛良全[2] 蒋兵 LI Yuan-dong;DENG Xiao-qin;XU Bin;WANG Liang;XU Su;ZHOU Jun-yu;ZENG Guo-qiang;GE Liang-quan;JIANG Bing(Sichuan Management and Monitoring Center Station of Radioactive Environment,Chengdu 611139;The College of Nuclear Technology and Automation Engineering,Chengdu University of Technology,Chengdu 610059)

机构地区：[1]四川省辐射环境管理监测中心站,成都611139 [2]成都理工大学核技术与自动化工程学院,成都610059

出　　处：《环境技术》2020年第4期213-216,共4页Environmental Technology

基　　金：国家自然科学基金,编号:41774147,名称:高分辨航空伽马阵列探测器群能谱响应研究;国家重点研发计划项目,编号:2017YFC0602105,名称:高分辨率航空伽玛能谱测量及机载成像光谱测量技术。

摘　　要：便携式α/β表面污染仪是辐射环境监测领域重要设备,但其探测器存在体积大、工作电压高等缺点。据此,首先采用硫化锌(银)闪烁体和塑料闪烁体组成复合闪烁体以探测α粒子和β粒子,其次采用硅光电倍增管作为光电转换器耦合复合闪烁体构成新型α/β探测器。改进后的探测器封装体积为Φ8.0 cm×3.0 cm,工作电压范围为23~26 V。Portable α/β surface contamination instrument is an important equipment in the field of radiation environmental monitoring,but its detector has the disadvantages of large volume and high working voltage.Therefore,we employed a compound scintillator composed of ZnS(Ag)scintillator and a plastic scintillator to detectαand β particles,and then we coupled a Silicon photomultiplier,which was used asa photoelectric converter,with a scintillator to compose a new type ofα/βdetector.The package volume of the improved detector isΦ8.0 cm×3.0 cm,and the working voltage range is from 23 V to 26 V.

关 键 词：Α粒子 Β粒子 探测器 硅光电倍增管 闪烁体 

分 类 号：X591[环境科学与工程—环境工程] TL812.1[核科学技术—核技术及应用]