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Ogiwara, Norio; Hikichi, Yusuke*; Kamiya, Junichiro; Yamamoto, Kazami; Kinsho, Michikazu
Proceedings of 14th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.563 - 567, 2017/12
Mezawa, Tetsuya; Miyakawa, Kazuya; Sasamoto, Hiroshi; Soga, Koichi*
JAEA-Technology 2016-003, 25 Pages, 2016/05
JAEA-Technology-2016-003.pdf:2.91MB
Development of the monitoring technique for hydro-geochemical conditions of groundwater in low permeable sedimentary rocks with high content of dissolved gases in the underground facility is one of key issues in the Underground Research Laboratory (URL) project in order to obtain the reliable geochemical data. Development of the monitoring system for the groundwater geochemistry was conducted previously at the 140m gallery in the Horonobe URL. Thereafter, improvement and development of the monitoring system have been performed at the 350m gallery as the course of development technology to monitor the hydro-geochemical conditions during the URL construction. In this report, the results including the improvement and development of the monitoring system for the groundwater geochemistry at the 350m gallery and the several examples of data acquisition are presented.
Ogiwara, Norio; Hikichi, Yusuke; Kamiya, Junichiro; Kinsho, Michikazu
Journal of the Vacuum Society of Japan, 59(4), p.79 - 82, 2016/04
Ashikagaya, Yoshinobu; Kawasaki, Tomokatsu; Yoshino, Toshiaki; Ishida, Keiichi
JAERI-Tech 2005-010, 81 Pages, 2005/03
JAERI-Tech-2005-010.pdf:16.65MB
no abstracts in English
Ashikagaya, Yoshinobu; Yoshino, Toshiaki; Yasu, Katsuji; Kurosawa, Yoshiaki; Sawa, Kazuhiro
JAERI-Tech 2002-094, 80 Pages, 2002/12
JAERI-Tech-2002-094.pdf:12.8MB
no abstracts in English
Oishi, Tetsuya; Yoshida, Makoto
Journal of Nuclear Science and Technology, 38(12), p.1115 - 1119, 2001/12
no abstracts in English
Oishi, Tetsuya; Yoshida, Makoto; Saegusa, Jun; Honda, Tetsutaro*; Takahashi, Koji*; Kuwabara, H.*
Journal of Nuclear Science and Technology, 38(3), p.203 - 208, 2001/03
no abstracts in English
Yoshida, Makoto; Oishi, Tetsuya; Saegusa, Jun; Honda, Tetsutaro*; Takahashi, Koji*; Kuwabara, H.*
Proceedings of 10th International Congress of the International Radiation Protection Association (IRPA-10) (CD-ROM), 6 Pages, 2000/05
no abstracts in English
Tachibana, Yukio; Kunitomi, Kazuhiko; Furusawa, Takayuki; Shinozaki, Masayuki; ;
JAERI-Tech 98-045, 36 Pages, 1998/10
no abstracts in English
; Kajimoto, Yoichi; ; Endo, Akira; Ikezawa, Yoshio
Hoken Butsuri, 29, p.189 - 194, 1994/00
no abstracts in English
C species in gaseous wasteEndo, Akira; ; ; ;
Health Physics, 62(4), p.319 - 327, 1992/04
Times Cited Count：3 Percentile：35.04(Environmental Sciences)no abstracts in English
;
Nihon Genshiryoku Gakkai-Shi, 29(7), p.656 - 663, 1987/07
Times Cited Count：0 Percentile：0.00(Nuclear Science & Technology)no abstracts in English
Hoken Butsuri, 15(4), p.295 - 305, 1980/00
no abstracts in English
and/or F
;
Journal of Nuclear Science and Technology, 14(2), p.147 - 152, 1977/02
Times Cited Count：1no abstracts in English
Kyoto Daigaku Genshiro Jikkenjo, Koenerugi Hoshasen No Hoken Butsuri (Koenerugi Hoshasenjo De Seisei Suru Yudo Hoshano Ni Tsuite) Kenkyukai Hokokusho, p.44 - 48, 1976/00
no abstracts in English
Yamamoto, Yoichi; Kijima, Yuichi; Tomita, Yutaka
no journal, ,
Radionuclide monitoring is the only way to judge whether the target explosion event was a nuclear test. Among the radionuclides produced by the nuclear explosion, the noble gases are particularly important because they are inert and more likely to leak to the ground rather than other substances in an underground nuclear test. Only 4 radioxenon isotopes as the noble gases are monitored for the CTBT verification. It was after the first nuclear test of North Korea in October 2006, when a radioxenon monitoring system installed at the Takasaki radionuclide monitoring station in Japan and the radioxenon monitoring has been carried out since January 2007. We report on the past observation results of the radioxenon at the Takasaki radionuclide monitoring station and the characteristics of radioxenon background.
Yamamoto, Yoichi; Kijima, Yuichi; Tomita, Yutaka
no journal, ,
This presentation summarizes JAEA's recent activities related to CTBT verification regime. To establish the global verification regime of CTBT for the nuclear tests, JAEA has been operating provisionally three facilities (two monitoring stations and one radionuclide laboratory) of the CTBT international monitoring system and a national data center for radionuclide monitoring. For the 6th nuclear test conducted by North Korea in September 2017, JAEA reported the analysis and evaluation results of data observed at the CTBT radionuclide monitoring stations to the national government etc. in a timely manner and thereby contributed to the evaluation by the national government based on the CTBT operation system in Japan. For the purpose of strengthening CTBTO's detection capability for nuclear tests, JAEA started new noble gas joint measurement project with CTBTO in Horonobe (Hokkaido) and Mutsu (Aomori) based on the Japanese government contribution in 2017.
