Drift wave driven zonal flows in plasmas
文献类型：期刊论文
| 作者 | Kaladze, TD; Wu, DJ ; Pokhotelov, OA; Sagdeev, RZ; Stenflo, L; Shukla, PK
|
| 刊名 | PHYSICS OF PLASMAS
 |
| 出版日期 | 2005-12-01 |
| 卷号 | 12期号:12页码:122311 |
| 关键词 | ROSSBY WAVES GENERATION TURBULENCE |
| ISSN号 | 1070-664X |
| 英文摘要 | The generation of large-scale zonal flows by small-scale electrostatic drift waves in a plasma is considered. The generation mechanism is based on the parametric excitation of convective cells by finite amplitude drift waves. To describe this process a generalized Hasegawa-Mima equation containing both vector and scalar nonlinearities is used. The drift waves are supposed to have arbitrary wavelengths (as compared with the ion Larmor radius). A set of coupled equations describing the nonlinear interaction of drift waves and zonal flows is deduced. The generation of zonal flows turns out to be due to Reynolds stresses produced by finite amplitude drift waves. It is found that the wave vector of the fastest growing mode is perpendicular to that of the drift pump wave. Explicit expressions for the maximum growth rate as well as for the optimal spatial dimensions of the zonal flows are obtained. A comparison with previous results is carried out. The present theory can be used for interpretations of drift wave observations in laboratory plasmas. (c) 2005 American Institute of Physics. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Fluids & Plasmas |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | ROSSBY WAVES ; GENERATION ; TURBULENCE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000234214600013 |
| 公开日期 | 2012-03-07 |
| 源URL | [http://159.226.72.40/handle/332002/4122]  |
| 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.Tbilisi State Univ, Vekua Inst Appl Math, GE-0143 Tbilisi, Rep of Georgia 3.Univ Sheffield, Sheffield, S Yorkshire, England 4.Inst Earth Phys, Moscow 123995, Russia 5.Univ Maryland, Dept Phys, College Pk, MD 20740 USA 6.Umea Univ, Dept Phys, SE-90187 Umea, Sweden 7.Umea Univ, Dept Phys, SE-90187 Umea, Sweden 8.Ruhr Univ Bochum, D-44780 Bochum, Germany |
| 推荐引用方式 GB/T 7714 | Kaladze, TD,Wu, DJ,Pokhotelov, OA,et al. Drift wave driven zonal flows in plasmas[J]. PHYSICS OF PLASMAS,2005,12(12):122311. |
| APA | Kaladze, TD,Wu, DJ,Pokhotelov, OA,Sagdeev, RZ,Stenflo, L,&Shukla, PK.(2005).Drift wave driven zonal flows in plasmas.PHYSICS OF PLASMAS,12(12),122311. |
| MLA | Kaladze, TD,et al."Drift wave driven zonal flows in plasmas".PHYSICS OF PLASMAS 12.12(2005):122311. |
入库方式： OAI收割
来源：紫金山天文台
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