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Isotopic evidence of non-thermalized neutron irradiation in solar-gas-rich meteorites: Possibility of the interaction with solar neutrons and activity from the early Sun
https://hiroshima.repo.nii.ac.jp/records/2006777
https://hiroshima.repo.nii.ac.jp/records/20067776e1a012f-3d42-4fe1-9988-5e87d09e19a4
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
EarthPlanetSciLett_28_173.pdf (208.4 KB)
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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 | Isotopic evidence of non-thermalized neutron irradiation in solar-gas-rich meteorites: Possibility of the interaction with solar neutrons and activity from the early Sun | |||||||||
| 言語 | en | |||||||||
| 作成者 |
Hidaka, Hiroshi
× Hidaka, Hiroshi
× Yoneda, Shigekazu
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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) 2009 Elsevier B.V. | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | cosmic ray exposure | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Meteorite | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | neutron capture | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Samarium | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | gadolinium | |||||||||
| 主題 | ||||||||||
| 主題Scheme | NDC | |||||||||
| 主題 | 440 | |||||||||
| 内容記述 | ||||||||||
| 内容記述 | Sm-150/Sm-149 and Gd-158/Gd-157 isotopic shifts in extraterrestrial materials provide evidence of the occurrence of neutron capture reactions caused by the interaction of cosmic rays with the surface of the materials. The Sm and Gd isotopic shifts of chemical leachates from the Kapoeta meteorite, known as a solar-gas-rich meteorite, show a clear neutron capture record corresponding to the neutron fluence up to 9.0 x 10(15) n cm(-2). The intensities of the neutron fluences of two fractions from Kapoeta significantly exceed what is expected from the time for cosmic ray irradiation during the transit to Earth. Furthermore, the combination of Sm and Gd isotopic shifts, defined as epsilon(Sm)/epsilon(Gd) to understand the neutron energy spectrum, shows a different neutron irradiation environment for certain components of Kapoeta (epsilon(Sm)/epsilon(Gd) = 1.9 +/- 0.5, and 1.9 +/- 0.7) from those of other meteorites and lunar samples (epsilon(Sm)/epsilon(Gd) = 0.4-0.9). The isotopic data of Sm and Gd from Kapoeta suggest the irradiation of non-thermalized neutrons with the energies over 1 eV from the early Sun. | |||||||||
| 言語 | en | |||||||||
| 出版者 | ||||||||||
| 出版者 | Elsevier Science Bv | |||||||||
| 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.epsl.2009.06.006 | |||||||||
| 関連情報 | ||||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | http://dx.doi.org/10.1016/j.epsl.2009.06.006 | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0012-821X | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA00631029 | |||||||||
| 開始ページ | ||||||||||
| 開始ページ | 173 | |||||||||
| 書誌情報 |
Earth and Planetary Science Letters Earth and Planetary Science Letters 巻 28, 号 1-2, p. 173-178, 発行日 2009-07-30 |
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| 旧ID | 29249 | |||||||||
