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Electron collisionless damping of the geodesic acoustic mode in rotating tokamak plasmas

文献类型：期刊论文

作者Xie, Baoyi1; Guo, Wenfeng2; Gong, Xueyu1,3; Yu, Jun1; Chen, You1; Cao, Jinjia3
刊名NUCLEAR FUSION
出版日期2016-12-01
卷号56期号:12页码:124001
关键词Geodesic Acoustic Mode Toroidal Rotation Electron Dynamics Collisionless Damping
DOI10.1088/0029-5515/56/12/124001
文献子类Article
英文摘要Collisionless damping of the geodesic acoustic mode due to electron dynamics in rotating tokamak plasmas is investigated. A dispersion relation of the geodesic acoustic mode with a non-adiabatic electron response in a rotating tokamak is derived and solved both analytically and numerically. It is found that the collisionless damping of the geodesic acoustic mode, due to electron dynamics, significantly increases with the increasing toroidal rotation, especially in the large safety factor regime. The rotation-induced frequency up-shift of the geodesic acoustic mode increases the resonant velocity, which enables a larger number of electrons to resonate with the geodesic acoustic mode. The significant increase of the number of the resonant electrons significantly enhances the collisionless damping of the geodesic acoustic mode. The result indicates that in rotating tokamak plasmas a more complete picture of the geodesic acoustic mode should include the electron dynamics.
WOS关键词TRANSPORT ; WAVES ; FLOWS
WOS研究方向Physics
语种英语
WOS记录号WOS:000384099300001
资助机构National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Natural Science Foundation of China(11375085 ; National Magnetic Confinement Fusion Science Program of China(2013GB111002 ; National Magnetic Confinement Fusion Science Program of China(2013GB111002 ; 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源URL[http://ir.hfcas.ac.cn:8080/handle/334002/21751]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
3.Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China
推荐引用方式
GB/T 7714		 Xie, Baoyi,Guo, Wenfeng,Gong, Xueyu,et al. Electron collisionless damping of the geodesic acoustic mode in rotating tokamak plasmas[J]. NUCLEAR FUSION,2016,56(12):124001.
APA Xie, Baoyi,Guo, Wenfeng,Gong, Xueyu,Yu, Jun,Chen, You,&Cao, Jinjia.(2016).Electron collisionless damping of the geodesic acoustic mode in rotating tokamak plasmas.NUCLEAR FUSION,56(12),124001.
MLA Xie, Baoyi,et al."Electron collisionless damping of the geodesic acoustic mode in rotating tokamak plasmas".NUCLEAR FUSION 56.12(2016):124001.

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来源：合肥物质科学研究院

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