A REMOTE CONTINUOUS AIR MONITORING SYSTEM FOR MEASURING AIRBORNE ALPHA CONTAMINATION
A REMOTE CONTINUOUS AIR MONITORING SYSTEM FOR MEASURING AIRBORNE ALPHA CONTAMINATION
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用于测量空气中 ALPHA 污染的远程连续空气监测系统
DOI：
10.1093/rpd/ncaa028
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发表时间：
2020
影响因子：
1
通讯作者：
Torii Tatsuo
中科院分区：
文献类型：
--
作者：
Morishita Yuki;Usami Hiroshi;Furuta Yoshihiro;Aoki Katsunori;Tsurudome Koji;Hoshi Katsuya;Torii Tatsuo
我们开发了远程连续空气监测(RCAM)系统。RCAM系统由一个个人空中监测器和一个机器人组成。个人空气监测器(德国萨拉德的poCAMon)有一个400mm2离子注入硅探测器和一个25 mmφ的薄膜空气过滤器。个人空气监测仪提供任何测量时间间隔的阿尔法能谱。示范测量是在Mizunami地下研究实验室和通风不良的混凝土建筑的地下进行的。在相对湿度几乎为100%的情况下，RCAM系统被远程操作并成功地测量了222Rn子体。在测量的α谱中，218Po(6.0 MeVα)和214Po(7.7 MeVα)的峰被清晰地识别出来。我们开发的监测仪有望用于高伽马射线环境或污染地区的阿尔法粉尘监测，因为这些地区的工作人员无法安全进入。
We developed a remote continuous air monitoring (RCAM) system. The RCAM system consisted of a personal air monitor and a robot. The personal air monitor (poCAMon, SARAD, Germany) had a 400-mm2ion-injected silicon detector and a membrane air filter with 25 mmφ. The personal air monitor provides the alpha energy spectra for any measurement time interval. Demonstration measurements were taken underground at the Mizunami Underground Research Laboratory and at a poorly ventilated concrete building. The RCAM system was remotely operated and successfully measured the222Rn progeny even though the relative humidity was almost 100%. In the measured alpha spectra, the peaks of218Po (6.0-MeV alpha) and214Po (7.7-MeV alpha) were clearly identified. Our developed monitor is promising for alpha dust monitoring in a high gamma-ray environment or contaminated areas where a worker cannot safely physically enter.