| タイトル | HF-induced parametric decay in presence of field-aligned irregularities |
| 著者（英） | Rypdal, K.; Cragin, B. L. |
| 著者所属（英） | Max-Planck-Inst. fuer Aeronomie|Tromsoe Univ. |
| 発行日 | 1979-11-01 |
| 言語 | eng |
| 内容記述 | A nonlinear theory for the saturation of the HF-induced parametric decay instability is formulated in terms of the normal modes of a field-aligned plasma wave duct. Coupling coefficients between modes are derived, and a saturation spectrum is computed numerically for a typical irregularity. The computed spectrum shows that unstable waves may propagate at larger angles to the magnetic field than would be the case in a regular medium. The relevance of this work to the experiment of Muldrew and Showen (1977), concerning the height of the HF-induced plasma line at Arecibo, is discussed. A possible explanation is also found for the 'decay line' feature in comparison with the 'broad bump' in the observed backscatter spectrum. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 80A15004 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/423811 |
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