Dynamics between toroidal Alfven eigenmode evolution and turbulence suppression under resonant magnetic perturbations on EAST
文献类型：期刊论文
| 作者 | Li, P.3,4; Li, Y. D.3 ; Li, J. G.3; Wu, G. J.3; Chen, W.2; Geng, J. S.3; Chen, F.3,4; Wang, Y. H.3,4; Zhang, B.1; Xu, L. Q.3
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| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2021-08-01 |
| 卷号 | 61 |
| 关键词 | Alfven eigenmodes turbulence multi-scale physics energetic particles zonal flows |
| ISSN号 | 0029-5515 |
| DOI | 10.1088/1741-4326/ac0b36 |
| 通讯作者 | Li, P.(lipan@ipp.ac.cn) ; Li, Y. D.(yd_li@ipp.ac.cn) |
| 英文摘要 | Since Alfven activity and turbulence are ubiquitous in magnetically confined plasma, it is important to understand the possible roles Alfven activity have in the nonlinear evolution of turbulence. The designed experiments in low collisionality are dedicated to studying the dynamics between turbulence and toroidal Alfven eigenmodes (TAEs), and assessing the multi-scale physics on the long-term scale behavior of fusion plasma. In TAEs (f similar to 200 kHz, n = 1) mitigation experiments under resonant magnetic perturbations (RMP, n (upper) = 2 and n (lower) = 3), there is a long-term (similar to 500 ms) quasi-stationary state after RMP rapidly reduces the TAEs amplitude four times. Turbulence suppression (2.0 < k rho (s) < 3.8) and low-frequency zonal flow (LFZF) generation are observed in this period. Similar experiments show that energetic particles (EPs) may act as a mediator of the cross-scale interactions and are beneficial for turbulence suppression and LFZF generation. Besides the synchronous couplings of turbulence (2.0 < k rho (s) < 3.8) and TAEs, TAEs and LFZF are observed. The dynamics between turbulence and TAEs provides an idea for synchronous control of TAEs and turbulence, and the resulting EPs confinement improvement, T (e) increase, T (i) increase and plasma stored energy increase are favorable for plasma performance. |
| WOS关键词 | DRIFT WAVES ; ZONAL FLOWS ; PLASMA ; PROFILE ; GENERATION ; TRANSPORT |
| 资助项目 | National Natural Science Foundation of China[11475222] ; National Natural Science Foundation of China[11875286] ; National Key R&D Program of China[2019YFE03010002] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000674469500001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/123333]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Li, P.; Li, Y. D. |
| 作者单位 | 1.East China Univ Technol, Nanchang 330013, Jiangxi, Peoples R China 2.Southwestern Inst Phys, POB 432, Chengdu 610041, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 4.Univ Sci & Technol China, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, P.,Li, Y. D.,Li, J. G.,et al. Dynamics between toroidal Alfven eigenmode evolution and turbulence suppression under resonant magnetic perturbations on EAST[J]. NUCLEAR FUSION,2021,61. |
| APA | Li, P..,Li, Y. D..,Li, J. G..,Wu, G. J..,Chen, W..,...&Liu, H. Q..(2021).Dynamics between toroidal Alfven eigenmode evolution and turbulence suppression under resonant magnetic perturbations on EAST.NUCLEAR FUSION,61. |
| MLA | Li, P.,et al."Dynamics between toroidal Alfven eigenmode evolution and turbulence suppression under resonant magnetic perturbations on EAST".NUCLEAR FUSION 61(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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