宽量程放射性区域监测系统研制  

A Development of Wide Range Area Monitoring System

作　　者：张佳 王成竹 沈杨 侯磊 刘芸 

机构地区：[1]山西中辐核仪器有限责任公司,太原030006

出　　处：《核电子学与探测技术》2016年第3期279-282,共4页Nuclear Electronics & Detection Technology

摘　　要：为满足用同一放射性区域监测系统监控高低剂量率的需求，研制了一套宽量程放射性区域监测系统。该系统采用2支不同量程的G—M管切换技术进行区域辐射监测，实现了1×10^-7-1Gy／h宽量程放射性区域监控。测试结果表明：该系统测量0．5txGy／h时，其相对标准偏差不大于2％；测量1Gy／h时，其相对标准偏差不大于0．5％；系统长期稳定性优于1．5％，可有效地满足区域辐射监测需求。This paper introduces a method which can measure radiation in a wide range by the GM tube with 2 different measuring ranges, and develops an area monitoring equipment which can measure the radiation be- tween 1 x 10-7 - 1 Gy/h. The result shows that the system can effectively measure： the relative standard devia- tion is less than 2% when the ambient dose equivalent get 0.5μGy/h ; the relative standard deviation is less than 0.5% when the ambient dose equivalent get 1 Gy/h; System stability is better than 1.5%

关 键 词：高低量程切换 区域监测系统 G—M计数管 

分 类 号：TL818[核科学技术—核技术及应用]