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Scandium 45 in meteoritic irons
https://doi.org/10.15094/00004456
https://doi.org/10.15094/00004456c2fbe6e7-1a21-4f2e-9b7c-8da161773b65
名前 / ファイル | ライセンス | アクション |
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KJ00000036262 (1.2 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1988-03-01 | |||||
タイトル | ||||||
タイトル | Scandium 45 in meteoritic irons | |||||
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 | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00004456 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Honda, Masatake
× Honda, Masatake× Nagai, Hisao× Takaoka, Nobuo× Yamamuro, Kenji× Kume, Takashi× Takahashi, Akihiro× Akizawa, Shigeru |
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著者所属(英) | ||||||
en | ||||||
College of Humanities and Sciences, Nihon University/College of Humanities and Sciences, Nihon University/Department of Earth Sciences, Faculty of Science, Yamagata University/College of Humanities and Sciences, Nihon University/College of Humanities and Sciences, Nihon University/College of Humanities and Sciences, Nihon University/College of Humanities and Sciences, Nihon University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | This report presents the results of determinations of cosmogenic ^<45>Sc and light noble gases in iron meteorites. Sc and REE were simultaneously determined using radiochemical neutron activation method. This method is sensitive enough for detection of as little as lower than 10^<-13>gSc/g, compared to the level of cosmic ray effects in irons which are usually in the range of 10^<-9>-10^<-12>gSc/g. The lowest concentration found in irons was 2×10^<-12>gSc/g in the Campo del Cielo and similar contents were observed in the Gibeon, DRP-78008 (and Brenham-metal). Even at these low levels, Sc seems mostly attributable to cosmic ray production. The Sc content in irons is best compared with cosmogenic ^4He. The ratio of Sc to ^4He, approximately 1×10^<-12>gSc/1×10^<-8>cc ^4He, or an average atomic ratio of 1 : 19±3,was observed independent of shielding. Technical aspects of metal phase separation from ordinary chondrites were studied. In one Peace River metal sample, 0.9 ppbSc was found. This number corresponds to 0.01% of the stone phase in the metal. This level of contamination seems still higher than the cosmogenic level of 0.2 ppbSc expected in the metal phase of this meteorite. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10784627 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Meteorites 巻 1, p. 197-205, 発行日 1988-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |