RADIATION PROTECTION ›› 2023, Vol. 43 ›› Issue (2): 114-121.

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Summary of the monitoring method and system development status of radioactive gas 37Ar

KONG Shuying, TUO Fei, YANG Baolu   

  1. National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088
  • Received:2022-08-30 Online:2023-03-20 Published:2023-05-11

Abstract: 37Ar is a characteristic activation product of underground nuclear explosion, and is a verification nuclide of on-site inspection stipulated by the Comprehensive Nuclear Test-Ban Treaty Organization (CTBTO). Therefore, accurate field measurement or laboratory measurement of the collected activity concentration of 37Ar are particularly critical. This paper collects and analyzes the characteristics, sampling and purification technology and 37Ar activity measurement methods, summarizes the advanced device and technology status of field or laboratory measurement in the world, with the aim to provide technical support for 37Ar activity concentration-related monitoring and other application fields.

Key words: 37Ar, activity concentration, proportional counter, on-site monitoring, laboratory measurement

CLC Number: 

  • TL81