期刊论文

中文

南华大学学报(自然科学版)

1673-0062

2019

33

3

44-47+53

10.19431/j.cnki.1673-0062.20190419.007

深圳市人居委员会项目(2017-01-0298-A1).

本校为第一机构

准确测量环境高浓度氡是评价高氡浓度场所氡年释放量及辐射危害的必要工作,通过基于高纯锗γ谱仪测量技术,利用特制的采样测量盒,建立了测量高氡浓度的方法及装置。实验结果表明:该测量方法探测效率为7.16×10 ^-3,采样盒放于高纯锗探头表面条件下所对应的探测上限可达1×10 ^11Bq/m ^3,探测下限为5.5×10 ^4Bq/m ^3;与闪烁室测氡方法进行了高氡浓度测量比对,两者相对偏差在2%以内。

It is necessary to accurately measure high concentration of radon for evaluating the annual releasing amount of radon from the places with high radon and assessing its radiation hazards.The method with separating sampling and count measurement procedure was developed for measuring high concentration radon based on a special sampling box and a high HPGe detector.The efficiency convert factor of the method is 7.16×10 ^-3 .The upper limit detection value of the method is 1×10 ^ 11 Bq/m ^3 and lower limit detection is 5.5×10 ^4 Bq/m ^3 under the...