一种定向非采集式气载放射性核素在线测量系统的研制  

Development of a Directional Online Non-sampling Measurement System for Airborne Radionuclides

作　　者：王亮[1] 唐传丰 朱小铰 吕映赋 邓志鹏 余鹏 WANG Liang;TANG Chuan-feng;ZHU Xiao-jiao;LV Ying-fu;DENG Zhi-peng;YU Peng(Sichuan Management&Monitoring Center Station of Radioactive Environment,Chengdu 610031,China;College of Nuclear Technology&Automation Engineering,Chengdu University of Technology,Chengdu 610059,China;Chengdu Newray Technology Co.Ltd.,Chengdu 610052,China)

机构地区：[1]四川省辐射环境管理监测中心站,成都610031 [2]成都理工大学核技术与自动化工程学院,成都610059 [3]成都新核泰科科技有限公司,成都610052

出　　处：《四川环境》2024年第2期111-116,共6页Sichuan Environment

基　　金：四川省生态环境保护科技项目(2022HB03)。

摘　　要：无论是发生核爆、核事故或核设施正常运行期间,都会向大气中排放放射性核素。为了更加及时、准确、有效地评价气载放射性,根据建立的各核素的照射量率与其活度浓度的数理模型,结合地面伽马射线屏蔽装置,研制了定向非采集式气载放射性核素在线测量系统,并计算了气载放射性核素40 K的活度浓度。结果表明研制的定向非采集式气载放射性核素在线测量系统能够精确测量大气的放射性核素的活度浓度,并具有方便快捷、测量范围大、响应时间低、能实现在线测量等优点。Radionuclides are emitted into the atmosphere during a nuclear explosion,an accident or normal operation of a nuclear facility.In order to evaluate airborne radionuclides in a more timely,accurate and effective way,an online measurement system for airborne radionuclides was developed based on the mathematical model established for the exposure rate and activity concentration of each radionuclide,and the shielding device for ground-based gamma-rays was used in the development process.Besides,the activity concentration of 40 K was calculated with this measurement system.The results showed that the directional online non-sampling measurement system for airborne radionuclides can be used to accurately measure the activity concentration of airborne radionuclides,and it is featured by great convenience,wide measurement range,short response time and on-line measurement.

关 键 词：大气放射性核素 在线测量 伽马射线测量 气载放射性 

分 类 号：P427.314[天文地球—大气科学及气象学] X831[环境科学与工程—环境工程]