Experimental and simulation analysis of Weakly Coherent Modes in I-mode discharges on EAST
文献类型：期刊论文
| 作者 | Liu, Y. J.2; Liu, Z. X.1; Xia, T. Y.2; Zhang, T.2 ; Liu, A. D.1; Liu, J.1; Deng, C. C.1; Ye, K. X.2; Geng, K. N.2; Li, G. S.2
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| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 64 |
| 关键词 | I-mode WCM density fluctuation BOUT plus plus |
| ISSN号 | 0029-5515 |
| DOI | 10.1088/1741-4326/ad4b3f |
| 通讯作者 | Liu, Z. X.(zxliu316@ustc.edu.cn) |
| 英文摘要 | This paper reports the recent observation of a weakly coherent mode (WCM) within a conventional reflectometer on EAST and successfully determines its poloidal wavenumber range. During the transition from the L-mode to I-mode, the line-averaged density remains nearly unchanged while a significant change is observed in the electron cyclotron emission (ECE) signals at the boundary. The difference between the signals for the two channels at the edge increased, coinciding with the appearance of the WCM and a simultaneous rise in the boundary electron temperature. Further investigation unveiled the modulating role of edge temperature ring oscillation (ETRO) (Liu et al 2020 Nucl. Fusion 60 126016) on high-frequency density fluctuations. Statistical results unveil an inverse relationship between the centeral frequency of the WCM and q95. Simulation results provide additional insights, demonstrating that the simulated 'WCM' in the density fluctuations aligns with experimental data in terms of center frequency. Additionally, the radial distribution of the simulated 'WCM' closely corresponds to regions with the strongest electron temperature gradients. Finally, through a cross-correlation analysis of the simulated fluctuations, the following phase relationship for the wavenumber range of 'WCM' was observed: alpha(Te) > alpha(ni) similar to alpha(phi) > alpha(Ti). |
| WOS关键词 | MICROWAVE REFLECTOMETRY ; CONFINEMENT |
| 资助项目 | National Magnetic Confinement Fusion Program of Chinahttp://dx.doi.org/10.13039/501100013282[2019YFE03090200] ; National Magnetic Confinement Fusion Program of Chinahttp://dx.doi.org/10.13039/501100013282[2022YFE03050003] ; National Magnetic Confinement Fusion Program of Chinahttp://dx.doi.org/10.13039/501100013282[2018YFE0311200] ; National Magnetic Confinement Fusion Program of China[12347168] ; National Magnetic Confinement Fusion Program of China[12275315] ; National Magnetic Confinement Fusion Program of China[12175277] ; National Natural Science Foundation of China[YZJJ2024QN20] ; Chinese Academy of Sciences |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001249971800001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Magnetic Confinement Fusion Program of Chinahttp://dx.doi.org/10.13039/501100013282 ; National Magnetic Confinement Fusion Program of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/136349]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Liu, Z. X. |
| 作者单位 | 1.Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Y. J.,Liu, Z. X.,Xia, T. Y.,et al. Experimental and simulation analysis of Weakly Coherent Modes in I-mode discharges on EAST[J]. NUCLEAR FUSION,2024,64. |
| APA | Liu, Y. J..,Liu, Z. X..,Xia, T. Y..,Zhang, T..,Liu, A. D..,...&Gao, X..(2024).Experimental and simulation analysis of Weakly Coherent Modes in I-mode discharges on EAST.NUCLEAR FUSION,64. |
| MLA | Liu, Y. J.,et al."Experimental and simulation analysis of Weakly Coherent Modes in I-mode discharges on EAST".NUCLEAR FUSION 64(2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
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