Geodesic acoustic modes in toroidally rotating tokamaks with an arbitrary beta
文献类型：期刊论文
| 作者 | Ren, HJ ; Li, D ; Chu, PK |
| 刊名 | PHYSICS OF PLASMAS
 |
| 出版日期 | 2013 |
| 卷号 | 20期号:7 |
| ISSN号 | 1070-664X |
| 通讯作者 | Ren, HJ (reprint author), Univ Sci & Technol China, CAS Key Lab Geospace Environm, Hefei 230026, Peoples R China. |
| 中文摘要 | Theoretical research on the geodesic acoustic mode (GAM) induced by the equilibrium toroidal rotation flow (ETRF) in the tokamak plasmas with an arbitrary beta is performed by using the ideal magnetohydrodynamic model, where beta is the ratio of the plasma pressure and magnetic field pressure. Two equations determining the poloidal displacement xi(theta) and the divergence of the Lagrangian perturbation are obtained and suitable for arbitrary cross-section tokamaks with large-aspect-ratios. The dispersion relations are then derived for two different coupling patterns by assuming xi(+/- 2) = 0 and xi(+/- 4) = 0, respectively, where xi(m) = 1/2 pi closed integral xi(theta)e(im theta) d theta with theta being the poloidal angle under the circular cross-section condition. In both patterns, the ETRF will increase the frequencies of the GAMs but beta can decrease them. The GAM for xi(+/- 2) = 0 has a larger frequency than GAM for xi(+/- 4) = 0. (C) 2013 AIP Publishing LLC. |
| 资助信息 | NSFC [11105148, 11075163, 11235009, 11005110]; Fundamental Research Funds for the Central Universities [WK2030040034]; Hong Kong Research Grants Council (RGC) General Research Funds (GRF) [112510, 112212] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57040]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Ren, HJ,Li, D,Chu, PK. Geodesic acoustic modes in toroidally rotating tokamaks with an arbitrary beta[J]. PHYSICS OF PLASMAS,2013,20(7). |
| APA | Ren, HJ,Li, D,&Chu, PK.(2013).Geodesic acoustic modes in toroidally rotating tokamaks with an arbitrary beta.PHYSICS OF PLASMAS,20(7). |
| MLA | Ren, HJ,et al."Geodesic acoustic modes in toroidally rotating tokamaks with an arbitrary beta".PHYSICS OF PLASMAS 20.7(2013). |
入库方式： OAI收割
来源：物理研究所
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