ATM analysis results on radioxenons detected in Japan

Kijima, Yuichi ; Yamamoto, Yoichi ; Tomita, Yutaka 

The Japan Atomic Energy Agency installed transportable xenon laboratories (TXLs) supporting the CTBT Organization at Horonobe, Hokkaido and Mutsu, Aomori, respectively and has been measuring radioxenon since 2018. The measurement data from these two systems is expected to contribute in better understandings of the data measured at the radionuclide monitoring station at Takasaki a part of International Monitoring System for CTBT. The analyses of estimation of emission source location by atmospheric transport modelling (ATM) were carried out to investigate the emission source of the radioxenons detected at these measuring points. We report the measurement results of radioxenons at 3 measuring points and the ATM analysis results.