On nonlinear decay of kinetic Alfven waves and application to some processes in space plasmas
文献类型：期刊论文
| 作者 | Zhao, J. S.1,3; Wu, D. J.1; Lu, J. Y.2 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2010-12-11 |
| 卷号 | 115页码:A12227 |
| ISSN号 | 0148-0227 |
| 关键词 | FIELD LINE RESONANCES ELECTRON ACCELERATION PARAMETRIC-EXCITATION WHISTLER WAVES MAGNETIZED PLASMA HEAVY-IONS MAGNETOSPHERE DENSITY TURBULENCE AURORA |
| 产权排序 | 产权排序 |
| 合作状况 | 填入合作性质等 |
| 中文摘要 | 摘要description |
| 英文摘要 | This paper considers the nonlinear decay of the kinetic Alfven waves (KAW) in the space plasmas. By using a two-fluid model, we obtain a nonlinear equation to investigate the resonant interaction among three kinetic Alfven waves. It is shown that the parametric instability of the kinetic Alfven wave becomes important when its perpendicular wavelength is the order of the ion acoustic gyroradius or the electron inertial length. We give a detailed discussion for the KAW decay in the plasma inertial range and show that (1) the reverse decay of the kinetic Alfven wave is stronger than its parallel decay for the arbitrary wavelength range; (2) the reverse decay is lager than the parallel decay for small angles of two perpendicular wave vectors of the decay waves, and these two decays are zero for large angles; (3) both growth rates depend on the choice of the wave number range of the decay waves; and (4) there exists two forbidden regions for the KAW decay. In this paper, we also discuss the nonlinear decay of the kinetic Alfven waves in the auroral zone and show that the parametric instability can occur there and may play an important role in forming two reverse electron streaming fluxes in the electron acceleration region. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | FIELD LINE RESONANCES ; ELECTRON ACCELERATION ; PARAMETRIC-EXCITATION ; WHISTLER WAVES ; MAGNETIZED PLASMA ; HEAVY-IONS ; MAGNETOSPHERE ; DENSITY ; TURBULENCE ; AURORA |
| 资助信息 | 国科图 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000285256600002 |
| 公开日期 | 2011-11-23 |
| 源URL | [http://159.226.72.40/handle/332002/1089]  |
| 专题 | 紫金山天文台_太阳和太阳系等离子体研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.China Meteorol Adm, Natl Ctr Space Weather, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, J. S.,Wu, D. J.,Lu, J. Y.. On nonlinear decay of kinetic Alfven waves and application to some processes in space plasmas[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2010,115:A12227 . |
| APA | Zhao, J. S.,Wu, D. J.,&Lu, J. Y..(2010).On nonlinear decay of kinetic Alfven waves and application to some processes in space plasmas.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,115,A12227 . |
| MLA | Zhao, J. S.,et al."On nonlinear decay of kinetic Alfven waves and application to some processes in space plasmas".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 115(2010):A12227 . |
入库方式： OAI收割
来源：紫金山天文台
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