Dynamics between toroidal Alfvén eigenmode evolution and turbulence suppression under resonant magnetic perturbations on EAST
文献类型：期刊论文
| 作者 | Li,P.1,4; Li,Y.D.4; Li,J.G.4; Wu,G.J.4; Chen,W.3; Geng,J.S.4; Chen,F.1,4; Wang,Y.H.1,4; Zhang,B.2; Xu,L.Q.4 |
| 刊名 | Nuclear Fusion
 |
| 出版日期 | 2021-07-13 |
| 卷号 | 61 |
| 关键词 | Alfvén eigenmodes turbulence multi-scale physics energetic particles zonal flows |
| ISSN号 | 0029-5515 |
| DOI | 10.1088/1741-4326/ac0b36 |
| 英文摘要 | AbstractSince Alfvén activity and turbulence are ubiquitous in magnetically confined plasma, it is important to understand the possible roles Alfvén activity have in the nonlinear evolution of turbulence. The designed experiments in low collisionality are dedicated to studying the dynamics between turbulence and toroidal Alfvén eigenmodes (TAEs), and assessing the multi-scale physics on the long-term scale behavior of fusion plasma. In TAEs (f ～ 200?kHz, n = 1) mitigation experiments under resonant magnetic perturbations (RMP, nupper = 2 and nlower = 3), there is a long-term (～500?ms) quasi-stationary state after RMP rapidly reduces the TAEs amplitude four times. Turbulence suppression (2.0 < kρs < 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 < kρs < 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, Te increase, Ti increase and plasma stored energy increase are favorable for plasma performance. |
| 语种 | 英语 |
| WOS记录号 | IOP:0029-5515-61-8-AC0B36 |
| 出版者 | IOP Publishing |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/123960]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 作者单位 | 1.University of Science and Technology of China, Hefei 230026, China 2.East China University of Technology, Nanchang 330013, China 3.Southwestern Institute of Physics, PO Box 432, Chengdu 610041, China 4.Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China |
| 推荐引用方式 GB/T 7714 | Li,P.,Li,Y.D.,Li,J.G.,et al. Dynamics between toroidal Alfvén 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 Alfvén eigenmode evolution and turbulence suppression under resonant magnetic perturbations on EAST.Nuclear Fusion,61. |
| MLA | Li,P.,et al."Dynamics between toroidal Alfvén 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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