HD-6型氡室装置氡体积活度空间均匀性分析  

Spatial Uniformity Analysis of Radon Volume Activity in HD-6 Radon Chamber Device

作　　者：田兴宇 苏建文 李云洋 杜猛猛 王昕瑶 Tian Xing-yu;Su Jian-wen;Li Yun-yang;Du Meng-meng;Wang Xin-yao(First Monitoring Center of China Earthquake Administration,Tianjing 300171,China)

机构地区：[1]中国地震局第一监测中心,天津300171

出　　处：《江西化工》2023年第3期30-33,共4页Jiangxi Chemical Industry

基　　金：中国地震局第一监测中心科技创新主任基金项目(FMC2022004);中国地震局地震科技星火计划(XH22017YA)联合资助。

摘　　要：HD-6型氡室是为测氡仪校准测试提供参考体积活度的装置,通过动态循环控制方法进行校准环境的氡浓度控制。由于在测试过程中,标准器与被测仪器所测量气体分别来自氡室内的不同区域,因此氡室内部气体环境中的氡是否分布均匀是影响仪器校准因子测试结果准确度的重要因素,也是校准结果不确定度的主要来源之一。为此,研究通过实验对HD-6型多功能控制氡室装置内部氡核素的分布情况进行了测试,使用Alpha Guard P2000 pro型测氡仪在2951.5 Bq/m^(3)氡浓度条件开展了氡室氡分布均匀性试验,通过分析试验数据对氡室氡分布均匀性进行了评价,并通过对比测试分析了氡室氡分布均匀性对仪器校准结果的影响。The HD-6 radon chamber is a device that provides a reference volume activity for the calibration test of the radon detector.The radon concentration of the calibration environment is controlled by the dynamic cycle control method.During the test process,the gas measured by the standard and the measured instrument comes from different areas of the radon chamber.Therefore,whether the radon in the gas environment inside the radon chamber is evenly distributed is an important factor affecting the accuracy of the calibration factor test results,and it is also the main source of the uncertainty of the calibration results.Therefore,the distribution of radon nuclides in the HD-6 multi-functional control radon chamber device was tested experimentally.The Alpha Guard P2000 pro radon detector was used to carry out the radon distribution uniformity test in the radon chamber under the condition of 2951.5 Bq/m^(3) radon concentration.The uniformity of radon distribution in radon chamber was evaluated by analyzing the experimental data.The influence of radon distribution uniformity in radon chamber on instrument calibration results was analyzed by comparative test.

关 键 词：测氡仪 氡室 均匀性 校准 

分 类 号：TL81[核科学技术—核技术及应用]