| タイトル | Isotopic composition of cosmic-ray boron and nitrogen |
| 著者（英） | Krombel, K. E.; Wiedenbeck, M. E. |
| 著者所属（英） | Chicago Univ. |
| 発行日 | 1988-05-15 |
| 言語 | eng |
| 内容記述 | New measurements of the cosmic-ray boron and nitrogen isotopes at earth and of the elemental abundances of boron, carbon, nitrogen, and oxygen are presented. A region of mutually allowed values for the cosmic-ray nitrogen source ratios is determined, and the cosmic-ray escape mean free path is determined as a function of energy using a leaky box model for cosmic-ray propagation in the Galaxy. Relative to O-16, a N-15 source abundance consistent with solar system composition and a N-14 source abundance which is a factor of about three underabundant relative to the solar value are found. |
| NASA分類 | SPACE RADIATION |
| レポートNO | 88A36822 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/370894 |
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