| Plasma shaping effects on the geodesic acoustic mode in toroidally axisymmetric plasmas | |
| Gao, Zhe ; Wang, Ping ; Sanuki, H. | |
| 2010-05-10 ; 2010-05-10 | |
| 关键词 | ASPECT RATIO Physics, Fluids & Plasmas |
| 中文摘要 | The geodesic acoustic mode (GAM) is studied in noncircular, finite aspect ratio, toroidal plasmas with a gyrokinetic theory and a local magnetohydrodynamics equilibrium model. Dependencies of the GAM frequency on finite aspect ratio and elongation are investigated when trapped particle effects are neglected in the large aspect ratio limit. It is found that the GAM frequency sharply decreases with an increasing elongation by dependence of [2/(kappa(2)+1)](1/2) and slightly decreases with an increasing inverse aspect ratio by dependence of about 1-3 epsilon(2)/4, where kappa and epsilon are the plasma elongation and inverse aspect ratio. The elongation dependence comes from the modification of classical ion polarization balanced by that of curvature drift polarization while the aspect ratio dependence is due to the former in the leading order. (C) 2008 American Institute of Physics. |
| 语种 | 英语 ; 英语 |
| 出版者 | AMER INST PHYSICS ; MELVILLE ; CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/22172]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Gao, Zhe,Wang, Ping,Sanuki, H.. Plasma shaping effects on the geodesic acoustic mode in toroidally axisymmetric plasmas[J],2010, 2010. |
| APA | Gao, Zhe,Wang, Ping,&Sanuki, H..(2010).Plasma shaping effects on the geodesic acoustic mode in toroidally axisymmetric plasmas.. |
| MLA | Gao, Zhe,et al."Plasma shaping effects on the geodesic acoustic mode in toroidally axisymmetric plasmas".(2010). |
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