| タイトル | Negative ions in the ionospheres of planetary bodies without atmospheres |
| 著者（英） | Wekhof, A. |
| 著者所属（英） | California Univ. |
| 発行日 | 1981-02-01 |
| 言語 | eng |
| 内容記述 | It is noted that negative ions may be formed in the ionospheres of Mercury, the moon, and Jupiter's satellites with densities of a few percent of the ionospheric electron density. Negative ions result from three mechanisms at the planetary surface: charge inversion during energetic proton scattering, with simultaneous secondary negative ion emission, and micrometeorite impacts. The density and distribution of negative ions around planetary bodies depends primarily on the negative ion lifetimes determined through photodetachment by solar radiation. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 81A29653 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/417178 |
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