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Hydromagnetic Coupling Oscillations in Non-uniform, Collisionless Plasmas
https://jaxa.repo.nii.ac.jp/records/34403
https://jaxa.repo.nii.ac.jp/records/3440339f77cb6-5a41-4f7a-b2ad-34e130c4ac15
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SA2400584.pdf (1.6 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
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| 公開日 | 2015-03-26 | |||||||
| タイトル | ||||||||
| タイトル | Hydromagnetic Coupling Oscillations in Non-uniform, Collisionless Plasmas | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | departmental bulletin paper | |||||||
| 著者 |
TAMAO, Tsutomu
× TAMAO, Tsutomu
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| 出版者 | ||||||||
| 出版者 | 東京大学宇宙航空研究所 | |||||||
| 出版者（英） | ||||||||
| 出版者 | Institute of Space and Aeronautical Science,University of Tokyo | |||||||
| 書誌情報 |
en : ISAS report/Institute of Space and Aeronautical Science,University of Tokyo 巻 33, 号 4, p. 97-123, 発行日 1968-03 |
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| 抄録（英） | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | The main object in the present paper is to study the thermal effects on resonant coupling hydromagnetic oscillations in inhomogenuous, low-β plasmas, such as the earth magnetosphere. Applying the drift kinetic approximation the fundamental equations for the coupling modes between the Alfven and magnetosonic oscillations in a non-uniform, collisionless plasma are obtained. There are two thermal effects for such oscillations, the thermal dissipation due to wave-particle resonance interactions and the drift effect from plasma inhomogeneities. For the outer magnetospheric conditions, where β≃ (m_e)/(m_i), it is shown that electron thermal dissipation of hydromagnetic oscillations with ω/(k_∥)≃ V_A is most effective within the resonance regions which appear in the cold plasma limit. This effect is proportional to ω/(Ω_i) for the case of continuous distribution of plasma parameters and (ω/(Ω_i))^2 for the stratified distribution, respectively, where Ω_i is the ion gyrofrequency. Attenuation of hydromagnetic waves due to ion-wave interaction may be a possible process for ion heating in the plasma sheet of the geomagnetic tail and relevant equations are also derived. With a view to applying the results to the magnetospheric plasma, drift wave instabilities in long wave length limit are discussed for the most general case, including simultaneously the density, temperature and magnetic field gradients, as well as the ion Larmor radius effect. | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0372-1418 | |||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA00675986 | |||||||
| 資料番号 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 資料番号: SA2400584000 | |||||||
