High-k turbulence characteristics in density modulation experiments of EAST
文献类型：期刊论文
| 作者 | Chen, F.1,2; Li, P.1; Li, Y. D.1 ; Wang, X. J.1; Wu, G. J.1; Geng, J. S.1,2; Wang, Y. H.1,2; Sun, N.1,2; Sun, P. J.1; Wang, M.1
|
| 刊名 | AIP ADVANCES
 |
| 出版日期 | 2024-06-01 |
| 卷号 | 14 |
| DOI | 10.1063/5.0197005 |
| 通讯作者 | Chen, F.(fei.chen@ipp.ac.cn) |
| 英文摘要 | High-k turbulence (1 < k(theta)rho(s) < 5) spectrograms have been directly measured in density modulation experiments of the EAST tokamak using the collective Thomson scattering diagnostic system. Density-peaking modulation is achieved in Lower Hybrid Wave (LHW) modulation experiments, revealing that the broadband turbulence is sensitive to the power modulation of LHW and the concomitant variation of density-peaking. Additionally, the contributions of 2.45/4.6 GHz LHW to density peaking differ when Neutral Beam Injection (NBI) is on/off, displaying distinct responses of broadband turbulence in low/high frequency ranges. It is found by cross-coherence analysis that the phase angle is negative in cases without NBI, while in NBI cases it can be modulated from negative to positive, indicating a significant transition of radial turbulence propagation. These findings highlight the active control of density-peaking via auxiliary heating in tokamak plasmas and suggest the potential role of high-k turbulence in density-peaking modulation. (c) 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license(https://creativecommons.org/licenses/by/4.0/). |
| WOS关键词 | PARTICLE-TRANSPORT ; CONFINEMENT DEGRADATION ; PLASMA ; HEAT ; PEAKING |
| 资助项目 | National MCF Energy RD Program ; [2019YFE03040000] ; [2022YFE03050000] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001271793700009 |
| 出版者 | AIP Publishing |
| 资助机构 | National MCF Energy RD Program |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/137074]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Chen, F. |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, F.,Li, P.,Li, Y. D.,et al. High-k turbulence characteristics in density modulation experiments of EAST[J]. AIP ADVANCES,2024,14. |
| APA | Chen, F..,Li, P..,Li, Y. D..,Wang, X. J..,Wu, G. J..,...&Li, J. G..(2024).High-k turbulence characteristics in density modulation experiments of EAST.AIP ADVANCES,14. |
| MLA | Chen, F.,et al."High-k turbulence characteristics in density modulation experiments of EAST".AIP ADVANCES 14(2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。