| タイトル | Singly-ionized helium in the driver gas of an interplanetary shock wave |
| 著者（英） | Muehlhaeuser, K.-H.; Schwenn, R.; Rosenbauer, H. |
| 著者所属（英） | Max-Planck-Inst. fuer Physik und Astrophysik|Max-Planck-Inst. fuer Aeronomie |
| 発行日 | 1980-03-01 |
| 言語 | eng |
| 内容記述 | The interplanetary shock wave observed on Jan. 29, 1977 by the HELIOS-1 plasma instruments shows an unusual feature: in the cold tenuous piston plasma following this shock, there appears a third peak in the energy per charge (E/q) spectra, in addition to the normal proton and alpha-particle peaks. The peak is located at E/q ? 4 and persists for about 14 hours, with slowly varying intensities. Independent simultaneous measurement of these particles' charge yields a value of approximately 1. These ions are thought to be He-4(+) ions travelling with the same speed as protons and alpha particles. The occurrence of He-4(+) indicates the possibility that during eruptive prominences or other solar transients, 'cold' chromospheric plasma might escape from the sun without undergoing the normal coronal heating process. |
| NASA分類 | SOLAR PHYSICS |
| レポートNO | 80A29165 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/422271 |
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