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| 氡子体体积活度的液体闪烁计数方法研究 | |
| 引用本文： | 杨志杰,李则书,侯胜利,刘皓然,张明,梁珺成. 氡子体体积活度的液体闪烁计数方法研究[J]. 计量学报, 2015, 36(3): 328-332. DOI: 10.3969/j.issn.1000-1158.2015.03.22 |
| 作者姓名： | 杨志杰 李则书 侯胜利 刘皓然 张明 梁珺成 |
| 作者单位： | 1.中国地质大学地球物理与信息技术学院, 北京 100083; 2.中国计量科学研究院, 北京 100029; 3.南华大学 核科学技术学院, 湖南 衡阳 421001 |
| 基金项目： | 梁珺成为通讯作者。liangjc@nim.ac.cn |
| 摘 要： | 基于液体闪烁计数原理和滤膜采样技术,建立了一种氡（222Rn）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。 |
| 关 键 词： | 计量学 液体闪烁计数法 α能谱法 氡子体体积活度 氡子体α潜能浓度 |
Research on the Progeny Volume Activity Measuring Method of 222 Rn with Liquid Scintillation Counting |
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| YANG Zhi-jie,LI Ze-shu,HOU Sheng-li,LIU Hao-ran,ZHANG Ming,LIANG Jun-cheng. Research on the Progeny Volume Activity Measuring Method of 222 Rn with Liquid Scintillation Counting[J]. Acta Metrologica Sinica, 2015, 36(3): 328-332. DOI: 10.3969/j.issn.1000-1158.2015.03.22 | |
| Authors: | YANG Zhi-jie LI Ze-shu HOU Sheng-li LIU Hao-ran ZHANG Ming LIANG Jun-cheng |
| Affiliation: | 1. School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China; 2. National Institute of Metrology, Beijing 100029, China; 3. School of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China |
| Abstract: | 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. |
| Keywords: | Metrology LSC method α energy spectrum method 222 Rn progeny volume activity PAEC |
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