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Ba isotopic signature for early differentiation between Cs and Ba in natural fission reactors
https://hiroshima.repo.nii.ac.jp/records/2006932
https://hiroshima.repo.nii.ac.jp/records/200693203551adb-5686-4d31-b7cf-e27503b4e490
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
GeochimCosmochimActa_72_4123.pdf (1.9 MB)
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| Item type | デフォルトアイテムタイプ_（フル）(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2023-03-18 | |||||||||
| タイトル | ||||||||||
| タイトル | Ba isotopic signature for early differentiation between Cs and Ba in natural fission reactors | |||||||||
| 言語 | en | |||||||||
| 作成者 |
Hidaka, Hiroshi
× Hidaka, Hiroshi
× Gauthier-Lafaye, François
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 権利情報 | ||||||||||
| 権利情報 | Copyright (c) 2008 Elsevier Ltd | |||||||||
| 主題 | ||||||||||
| 主題Scheme | NDC | |||||||||
| 主題 | 450 | |||||||||
| 内容記述 | ||||||||||
| 内容記述 | Ba isotopic studies of the Oklo and Bangombe natural fission reactors in east Gabon provide information on the geochemical behavior of radioactive Cs (135Cs and 137Cs) in a geological medium. Large isotopic deviations derived from fissiogenic Ba were found in chemical leachates of the reactor uraninites. The fissiogenic Ba isotopic patterns calculated by subtracting the non-fissiogenic component are classified into three types that show different magnifications of chemical fractionation between Cs and Ba. In addition, the isotopic signatures of fissiogenic 135Ba, 137Ba and 138Ba suggest an early differentiation between Cs and Ba of less than 20 years after the production of fissiogenic Cs and Ba. On the other hand, only small excesses of 135Ba (ε<+1.8) and/or 137Ba (ε<+1.3) were identified in some clay samples, which might have resulted from selective adsorption of 135Cs and 137Cs that migrated from the reactors by differentiation. | |||||||||
| 言語 | en | |||||||||
| 出版者 | ||||||||||
| 出版者 | Pergamon | |||||||||
| 出版者 | ||||||||||
| 出版者 | Elsevier Science Ltd. | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 資源タイプ | journal article | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | AO | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_b1a7d7d4d402bcce | |||||||||
| 関連情報 | ||||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | 10.1016/j.gca.2008.06.005 | |||||||||
| 関連情報 | ||||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | http://dx.doi.org/10.1016/j.gca.2008.06.005 | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0016-7037 | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA00655038 | |||||||||
| 開始ページ | ||||||||||
| 開始ページ | 4123 | |||||||||
| 書誌情報 |
Geochimica et Cosmochimica Acta Geochimica et Cosmochimica Acta 巻 72, 号 16, p. 4123-4135, 発行日 2008-08-15 |
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| 旧ID | 25982 | |||||||||
