| タイトル | Neon isotope studies of Fayetteville and Kapoeta meteorites and clues to ancient solar activity |
| 著者（英） | Rao, M. N.; Padia, J. T. |
| 著者所属（英） | NASA Johnson Space Center|Physical Research Lab. |
| 発行日 | 1989-06-01 |
| 言語 | eng |
| 内容記述 | Under the assumption that the solar-flare bombardment of the irradiated grains of gas-rich meteorites occurred about 4.5 b.y. ago on the parent body regoliths at 3 A.U., an estimate of the solar cosmic ray-produced Ne-21 is made by studying etched pyroxene minera separates from both light and dark portions of the gas-rich meteorites Fayetteville and Kapoeta. Excesses of solar cosmic ray Ne-21 were observed in dark portions of these meteorites, after accounting for their galactic cosmic ray Ne-21 production and solar flare Ne-21. In order to produce the estimated solar cosmic ray Ne-21 in the present samples, highly enhanced solar cosmic ray proton fluxes from the ancient sun are required. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 89A44407 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/362693 |
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