Group velocity in spatiotemporal representation of collisionless trapped electron mode in tokamak
文献类型：期刊论文
| 作者 | Liu Zhao-Yang1; Zhang Yang-Zhong3; Xie Tao2; Liu A-Di1; Zhou Chu1 |
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2021-06-05 |
| 卷号 | 70 |
| 关键词 | tokamak trapped electron mode group velocity zonal flow |
| ISSN号 | 1000-3290 |
| DOI | 10.7498/aps.70.20202003 |
| 通讯作者 | Liu Zhao-Yang(lzy0928@mail.ustc.edu.cn) |
| 英文摘要 | The multiple scale derivative expansion method is used to manipulate the electron drift kinetic equation, following the theoretical framework of drift wave-zonal flow system developed by Zhang et al. [Zhang Y Z, Liu Z Y, Mahajan S M, Xie T, Liu J 2017 Phys. Plasmas 24 122304]. At the zeroth order it is the linear eigenmode equation describing the trapped electron mode on a mirco-scale. At the first order it is the envelop equation for trapped electron mode modulated by the zonal flow on a meso-scale. The eigenmode equation has been solved by Xie et al. [Xie T, Zhang Y Z, Mahajan S M, Wu F, He Hongda, Liu Z Y 2019 Phys. Plasmas 26 022503] to obtain the eigenvalue and two-dimensional mode structure of trapped electron mode. These are essential components in calculating group velocities contained in the envelop equation. The radial group velocity arises from the geodesic curvature of magnetic field in tokamak. The poloidal group velocity stems from the normal curvature and diamagnetic drift velocity, which yields the mapping between the poloidal angle and time. Since the radial group velocity is also a function of poloidal angle, it is mapped to a periodic function of time with a period of milliseconds. The numerical results indicate the rapid zero-crossing, which is significant in the drift wave - zonal flow system and provides a sound foundation for studying zonal flow driven by trapped electron mode. |
| WOS关键词 | INSTABILITY ; PLASMAS |
| 资助项目 | National Natural Science Foundation of China[U1967206] ; National Natural Science Foundation of China[11975231] ; National Natural Science Foundation of China[11805203] ; National Natural Science Foundation of China[11775222] ; National MCF Energy R&D Program, China[2018YFE0311200] ; National MCF Energy R&D Program, China[2017YFE0301204] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDB-SSW-SYS004] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000659877700020 |
| 出版者 | CHINESE PHYSICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; National MCF Energy R&D Program, China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/123442]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Liu Zhao-Yang |
| 作者单位 | 1.Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Peoples R China 2.Sichuan Univ Sci & Engn, Zigong 643000, Peoples R China 3.Chinese Acad Sci, Ctr Magnet Fus Theory, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Zhao-Yang,Zhang Yang-Zhong,Xie Tao,et al. Group velocity in spatiotemporal representation of collisionless trapped electron mode in tokamak[J]. ACTA PHYSICA SINICA,2021,70. |
| APA | Liu Zhao-Yang,Zhang Yang-Zhong,Xie Tao,Liu A-Di,&Zhou Chu.(2021).Group velocity in spatiotemporal representation of collisionless trapped electron mode in tokamak.ACTA PHYSICA SINICA,70. |
| MLA | Liu Zhao-Yang,et al."Group velocity in spatiotemporal representation of collisionless trapped electron mode in tokamak".ACTA PHYSICA SINICA 70(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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