| タイトル | The polarization of second harmonic plasma emission |
| 著者（英） | Smerd, S. F.; Dulk, G. A.; Melrose, D. B. |
| 著者所属（英） | Commonwealth Scientific and Industrial Research Organization|Colorado Univ.|Australian National Univ. |
| 発行日 | 1978-06-01 |
| 言語 | eng |
| 内容記述 | It is shown that second-harmonic plasma emission is partially polarized in the sense of the ordinary mode of magnetoionic theory only when the Langmuir waves are confined to a small range of angles (less than 30 deg) to the magnetic-field lines. Consequently, Suzuki and Sheridan's (1977) observations of the polarization of harmonic Type III emission implies that (at least in the cases reported) the Langmuir waves must be nearly one-dimensional. For a nearly one-dimensional distribution, the degree of polarization and the frequency of observation should be related to the magnetic field. For the observed polarization of Type III bursts, the implied magnetic-field strengths are strong enough for induced scattering to cause the Langmuir waves to become nearly one-dimensional, which is consistent with the observed sense of polarization. In other applications of harmonic plasma emission where the Langmuir waves might be isotropic or in a loss-cone distribution, polarization in the sense of the extraordinary mode is predicted. |
| NASA分類 | PLASMA PHYSICS |
| レポートNO | 78A40927 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/432346 |
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