摘要
积累时间的选择对活性炭盒-γ谱法测氡析出率的结果有明显影响。实验发现,活性炭盒中的氡在炭层内分布达到均匀需要一定时间,当确定炭盒内的氡分布均匀时,采用不同积累时间的活性炭盒可得到一致的测量结果,这减小了因积累时间不同而引起的测量误差,同时说明反扩散效应对该测量方法准确性的影响不大。
In the experiment of activated carbon - gamma spectrum method to measure the radon exhalation rate, selection of sampling time significant affect the measurement, through the experiment we can found that radon in the carbon layer need some time to evenly distributed. When the radon distribution in the carbon layer is uniform, results are similar in different sampling time. Thus the measurement deviation can be minimized due to difference in sampling time, and the back - diffusion effect need not to be considered in this method.
出处
《核电子学与探测技术》
北大核心
2017年第5期474-477,共4页
Nuclear Electronics & Detection Technology
基金
湖南省教育厅科学研究项目(10CY001)资助
关键词
氡析出率
活性炭盒
积累时间
radon exhalation rate
actived carbon canister
sampling time
