| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-11-21 |
| タイトル |
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タイトル |
Isotopic ratios of plutonium in radioactive particles released by the accident of Fukushima Daiichi Nuclear Power Plant |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Junya Igarashi
Kazuhiko Ninomiya
Jian Zheng
Zijian Zhang
Miho Fukuda
Aono Tatsuo
Haruka Minowa
Hideki Yoshikawa
Keisuke Sueki
Yukihikko Satou
Atsushi Sinohara
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The atom ratios of Pu isotopes have unique values depending on the source of Pu release and are useful for identifying the origin of Pu. To date, various studies have been conducted on Pu analysis originating from the Fukushima Nuclear Power Plant (FDNPP) accident, which was the latest Pu release event. However, the Pu atom ratios originating from the FDNPP accident have not been determined experimentally because of serious Pu contamination by global fallout. In this study, we focused on radioactive particles formed in a reactor during the accident. The particles were assumed to be free of Pu contamination in the environment. The averaged Pu atom ratios of 240Pu/239Pu and 241Pu/239Pu for 7 particles were precisely determined for 0.369±0.008 and 0.150±0.007, respectively, by the sector field inductively coupled plasma mass spectrometry system (SF-ICP-MS) method. These values are close to the calculated value of the core inventory but are slightly different. In addition, the ratios were similar to reported values for environmental samples around the FDNPP, particularly for black substances and vegetation. This study determined accurate Pu atom ratios from the FDNPP ,which provided Pu fingerprint values of FDNPP for future Pu source studies. |
| 書誌情報 |
Journal of Environmental Radioactivity
巻 291,
p. 107856,
発行日 2025-11
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| 出版者 |
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出版者 |
Elsevier |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1016/j.jenvrad.2025.107856 |
