| タイトル | Cosmogenic nuclides: Observable effects of Martian volatiles |
| 本文（外部サイト） | http://hdl.handle.net/2060/19890008978 |
| 著者（英） | Drake, D. M.; Reedy, R. C.; Feldman, W. C. |
| 著者所属（英） | Los Alamos National Lab. |
| 発行日 | 1988-01-01 |
| 言語 | eng |
| 内容記述 | Cosmic-ray produced (cosmogenic) nuclides in returned Martian samples could be used to study the amounts and distributions of volatiles in the recent past on Mars. In planning for the gamma-ray spectrometer experiment that is scheduled to fly on the Mars Observer, many calculations were done on the nuclear reactions that should occur in the Martian surface, studying especially the production and transport of neutrons. It is found that three aspects of Mars can very significantly affect the production of cosmogenic products in Mars: the Martian atmosphere and the presence of H2O in or CO2 on the surface of Mars. These volatile components can greatly affect the energy and spatial distributions of neutrons, expecially those with thermal or near thermal energies, in the surface of Mars. In turn, these neutrons produce many cosmogenic nuclides that can be observed in samples returned from Mars. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 89N18349 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/143209 |
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