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ID 61253
フルテキストURL
著者
Ito, S. Okayama University, Faculty of Science
Ichimura, K. Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
Takaku, Y. Institute for Environmental Sciences, Department of Radioecology
Abe, K. Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
Harada, M. Okayama University, Faculty of Science
Ikeda, M. Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
Ito, H. Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
Kishimoto, Y. Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
Nakajima, Y. Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
Okada, T. Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
Sekiya, H. Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo
抄録
Chemical extraction using a molecular recognition resin named "Empore Radium Rad Disk" was developed to improve sensitivity for the low concentration of radium (Ra). Compared with the previous method, the extraction process speed was improved by a factor of three and the recovery rate for Ra-226 was also improved from 81 +/- 4% to > 99.9%. The sensitivity on the 10(-1) mBq level was achieved using a high-purity germanium detector. This improved method was applied to determine Ra-226 in Gd-2(SO4)(3)center dot 8H(2)O which will be used in the Super-Kamiokande Gadolinium project. The improvement and measurement results are reported in this paper.
発行日
2020-09-20
出版物タイトル
Progress of Theoretical and Experimental Physics
2020巻
9号
出版者
Oxford University Press
開始ページ
093H02
ISSN
2050-3911
資料タイプ
学術雑誌論文
言語
English
OAI-PMH Set
岡山大学
著作権者
© The Author(s) 2020.
論文のバージョン
publisher
DOI
Web of Science KeyUT
関連URL
isVersionOf https://doi.org/10.1093/ptep/ptaa105
ライセンス
http://creativecommons.org/licenses/by/4.0/
助成機関名
日本学術振興会
助成番号
26104004
26104006
19H05807
19H05808
26000003
17K14290
18J00049