手持式低功耗多功能辐射监测仪设计  

Design of Handheld Low Power Multifunctional Radiation Monitor

作　　者：范磊 左亮周[1] 詹佳硕 郑向阳 郭晓彬 蔺常勇[1] 肖伟 艾烨 FAN Lei;ZUO Liang zhou;ZHAN Jia-shuo;ZHENG Xiang yang;GUO Xiao-bin;LIN Chang-yong;XIAO Wei;AI Ye(Wuhan Second Ship Design Institute,Wuhan 430205,China;Nuclear and radiation safety center Beijing 100082,China)

机构地区：[1]武汉第二船舶设计研究所,武汉430205 [2]生态环境部核与辐射安全中心,北京100082

出　　处：《核电子学与探测技术》2020年第3期431-437,共7页Nuclear Electronics & Detection Technology

摘　　要：为满足核电站运行、同位素生产、放射性治疗等辐照环境的α、β和Y的放射性污染测量,本研究设计了一种手持式低功耗多功能辐射监测仪,其探测装置由两个φ30mm的ZnS(Ag)塑料闪烁体、光电倍增管、GM计数管等组成。探测装置测量窗口直径为30mm,放置有厚度为2.4μm的铝膜和30μm的钛膜,可分别进行a、β放射性污染测量,同时内置计数管可实现对由Y干扰引起a、β放射性测量误差的修正。经实验验证,G-M计数管对γ射线的测量相对误差为9.432%,对a粒子的2π探测效率为32.02%,对β粒子的2π探测效率为32.33%,结果表明本研究设计的多功能辐射监测仪具有较好的a、β和r探测性能。In order to meet the measurement of α、β、γradioactive contamination in irradiated environments such as nuclear power plant operation,isotope production,and radiation therapy,a handheld multifunctional radiation monitor was designed in this study.It consists of scintillator,photomultiplier tube,GM counter,etc.The diameter of measurement window of detector is 30mm,which can be used to measure α、β radioactive pollution.At the same time,the buil-in G-M counter tube can correct a andβradioactive errors caused by Y.After experimental verification,the relative measurement error forγmeasurement by G-M counter is 9.432%.he detection efficiency fora is 32.02%,the detection efficiency forβis 32.33%.the results show that α、β、γdetection is good for the multifunctional radiation monitor designed in this study.

关 键 词：ZnS(Ag)塑料闪烁体 G-M计数管 α、β、γ粒子探测 辐射监测 

分 类 号：O571.54[理学—粒子物理与原子核物理]