| タイトル | Electromagnetic ion cyclotron waves in the plasma depletion layer |
| 著者（英） | Hudson, Mary K.; Anderson, Brian J.; Denton, Richard E.; Fuselier, Stephen A. |
| 著者所属（英） | NASA Goddard Space Flight Center; NASA Headquarters |
| 発行日 | 1993-08-01 |
| 言語 | eng |
| 内容記述 | Results of a study of the theoretical properties of electromagnetic ion cyclotron (EMIC) waves which occur in the plasma depletion layer are presented. The analysis assumes a homogeneous plasma with the characteristics which were measured by the AMPTE/CCE satellite at 1450-1501 UT on October 5, 1984. Waves were observed in the Pc 1 frequency range below the hydrogen gyrofrequency, and these waves are identified as EMIC waves. The higher-frequency instability is driven by the temperature anisotropy of the H(+) ions, while the lower-frequency instability is driven by the temperature anisotropy of the He(2+) ions. It is argued that the higher-frequency waves will have k roughly parallel to B(0) and will be left-hand polarized, while the lower frequency wave band will have k oblique to B(0) and will be linearly polarized, in agreement with observations. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 93A55551 |
| 権利 | Copyright |
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