| タイトル | High-resolution observations of the isotopic composition of carbon and silicon in the galactic cosmic rays |
| 著者（英） | Greiner, D. E.; Wiedenbeck, M. E. |
| 著者所属（英） | California Univ.|California Univ. |
| 発行日 | 1981-08-01 |
| 言語 | eng |
| 内容記述 | High resolution satellite observations of the galactic cosmic rays (approximately 100-300 MeV/amu) have yielded determinations of near-earth isotopic compositions, which are presented: (C-13)/(C-12) = 0.070 + or - 0.006; (Si-29)/(Si-28) = 0.109(+0.024, -0.014); and (Si-30)/(Si-28) = 0.084(+0.020, -0.014). Using a standard propagation model, source values greater than solar are derived for each of these ratios. The (C-13) excess may be the result of cross section uncertainties, but the (Si-29) and (Si-30) appear to reflect real differences between the galactic cosmic-ray source and the solar system. |
| NASA分類 | SPACE RADIATION |
| レポートNO | 81A46015 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/415229 |
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