4πβ (L-S) γ符合法绝对测量^(22)Na溶液比活度  

Absolute Measurement of Specific Activity of ^(22)Na Solution by 4πβ(L-S) γ Coincidence Method

作　　者：翟盛庭[1] 黎玉萍[1] 

机构地区：[1]中国核动力研究设计院,成都610005

出　　处：《核动力工程》1999年第5期456-458,共3页Nuclear Power Engineering

摘　　要：简述了４πβ（Ｌ－Ｓ） γ符合法绝对测量２２Ｎａ 溶液比活度的原理， 导出了精确的符合计数方程，估计了β控测器对γ射线的效率及其对结果的影响。测量结果的扩展不确定度（ ｋ ＝ ３） ＜ １－４ ％ 。与其它二种装置比较， 结果在０－６３ ％ 以内符合。The paper describes the principle for absolute measurement of specific activity of 22 Na solution with 4πβ(L S) γcoincidence method The coincidence counting equation are strictly derived The γray efficiency of βdetector and its effect on measuring results are estimated Expanded uncertainty ( k =3) of measured result is less than 1 4% The result comparing with measuring results by other two sets of equipment,they are agreeable within 0 63%

关 键 词：液体闪烁计数器 绝对测量 钠22溶液 比活度 

分 类 号：O615.13[理学—无机化学] O614.112[理学—化学]