氚活度浓度标准装置的建立  

Establishment of tritium activity concentration standard device

作　　者：冯梅[1] 韦应靖[1] 李德红[2] 王勇[1] 张庆利[1] 王明亮 FENG Mei;WEI Yingjing;LI Dehong;WANG Yong;ZHANG Qingli;WANG Mingliang(China Institute for Radiation Protection,Taiyuan 030006;National Institute of Metrology,Beijing 100013)

机构地区：[1]中国辐射防护研究院,山西太原030006 [2]中国计量科学研究院,北京100013

出　　处：《辐射防护》2020年第4期271-277,共7页Radiation Protection

基　　金：国家重点研发计划(NQI)项目(课题编号:2017YFF0206304)。

摘　　要：为解决国内气载氚监测仪量值传递问题,建立了氚活度浓度标准装置,并对其性能进行了测试。经过实验测试,其重复性为0.97%,稳定性为1.1%,可提供的氚活度浓度范围为5.0×10^4~2.0×10^8 Bq·m^-3,扩展不确定度U r=4.6%~5.0%(k=2)。该氚活度浓度标准装置已被授权为社会公用计量标准,可以承担国内氚监测仪的量值传递工作。In order to solve the problem of the value transfer of tritium-in-air monitors in China,tritium activity concentration standard device was built up and the performance of the standard device was tested in laboratory. Testing results show that the device has a repeatability of 0.97%, a stability of 1.1%, activity concentration ranges between 5.0×10 4 Bq ·m -3 to 2.0×10 8 Bq ·m -3 , and the relative extended uncertainty of 4.6%-5.0% ( k =2) was achieved. This tritium activity concentration standard device has been authorized as social public measurement standard, which could be used for value transferring of tritium-in-air monitors in China.

关 键 词：氚活度浓度 氚监测仪 标准装置 量值传递 

分 类 号：TL81[核科学技术—核技术及应用]