高灵敏度低温漂环境γ辐射连续监测系统设计  

Design of a High Sensitive Environmental γ Radiation Monitor System with Low Temperature Coefficient

作　　者：宫辉[1] 邵贝贝[2] 

机构地区：[1]清华大学工程物理系,北京100084 [2]清华大学粒子技术与辐射成像教育部重点实验室,北京100084

出　　处：《核电子学与探测技术》2013年第12期1431-1433,共3页Nuclear Electronics & Detection Technology

摘　　要：随着我国核设施的大力建设,环境辐射的长期连续监测愈来愈重要。针对国内环境γ辐射监测的需求,基于高气压电离室,设计了微弱电流测量电路,搭建了环境γ辐射连续监测系统,并测试了该系统的量程、温度系数、分辨率、稳定性等指标。测试结果表明该系统在室外环境下,工作稳定可靠,具有很低的温度系数,可用于常规和核事故情况下的γ辐射本底监测。According to the requirements of the civil environmental γradiation monitoring , we designed an envi-ronmental γradiation monitor system based on the high pressure ionization chamber and the ultra low current measurement circuit , and tested its dynamic range , temperature coefficient , resolution and reliability .The γradiation monitor system can work reliably in outdoor environment , and can be used to monitor γradiation level at both normal and accidental situations .

关 键 词：环境γ辐射监测 微弱电流测量 高气压电离室 

分 类 号：TL81[核科学技术—核技术及应用]