期刊论文、会议论文

Liang, J.-C.

中文

计量学报

1000-1158

2015

36

3

328-332

2014年全国几何量精密测量技术学术交流会

2014年全国几何量精密测量技术学术交流会论文集

2014-08-01

青海

中国计量测试学会

10.3969/j.issn.1000-1158.2015.03.22

本校为其他机构

基于液体闪烁计数原理和滤膜采样技术,建立了一种氡(~(222)Rn)子体体积活度和α潜能浓度的测量方法。应用该方法对氡室中处于放射性平衡状态的氡子体体积活度进行了取样测量,氡子体α潜能浓度测量结果的扩展不确定度小于1.5%(k=2);用α能谱法对氡子体液体闪烁计数测量方法进行了旁证,两种方法的测量结果在不确定度范围内一致。

Based on liquid scintillation counting, a measuring method of 222Rn progeny volume activity is established. Using this kind of method, measurements are executed in NIM's radon chamber when 222Rn and its progenies get to the secure equilibrium, and a typically expanded uncertainty of 1.5% (k=2) for the potential alpha energy concentration is obtained. Comparative measurements based on the alpha energy spectrum are also executed and the results of the two methods agree within the estimated uncertainty limit. ©...