AlphaGUARD在主/被动模式下对^(222)Rn体积活度的响应  

The ^(222)Rn Volume Radioactivity Response of AlphaGUARD Radon Monitor in Active/passive Mode

作　　者：陆小军[1] 何林锋[1] 徐一鹤[1] 曹振[2] 孙训[1] 唐方东[1] 

机构地区：[1]上海市计量测试技术研究院,上海201203 [2]中国科学院上海应用物理研究院,上海201800

出　　处：《核电子学与探测技术》2014年第10期1192-1195,共4页Nuclear Electronics & Detection Technology

摘　　要：AlphaGUARD是目前技术性能最优的测氡仪之一,常用作氡测量传递标准。文章介绍了AlphaGUARD主动与被动测量模式的原理,对AlphaGUARD在主动和被动两种工作模式下和不同采样流速下的氡体积活度响应作了分析对比,实验结果表明:主动模式下AlphaGUARD体积活度响应小于在被动模式下,采样流速对AlphaGUARD的体积活度响应无明显影响;AlphaGUARD对222Rn体积活度的测量重复性随222Rn体积活度的增大而减小,但是尚得不到其重复性随采样流量的变化规律。AlphaGUARD radon monitor is the most stable and accurate radon detector at present , widely used as radon measurement standard delivery device at home and abroad .This paper introduced the AlphaGUARD ra-don volume activity response from low to high volume of radio -activity based on the actual applications , and made a comparative analysis of AlphaGUARD measuring radon activity in two modes .the results showed that：Firstly, the volume activity response of AlphaGUARD at active mode is smaller than the response at passive mode ;secondly , AlphaGUARD volume activity response doesn＇t changes with flow rate of sampling pump obvi-ously;thirdly, the222 Rn measurement repeatability decreases with the increase of 222 Rn volume activity, but not varied with the sampling flow rate .

关 键 词：AlphaGUARD 主被动模式 ^222RN 体积活度响应 

分 类 号：TL81[核科学技术—核技术及应用]