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

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成果类型：

期刊论文

作者：

Xie, Baoyi;Guo, Wenfeng*;Gong, Xueyu;Yu, Jun;Chen, You;...

通讯作者：

Guo, Wenfeng

作者机构：

[Chen, You; Xie, Baoyi; Gong, Xueyu; Yu, Jun] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.

[Guo, Wenfeng] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China.

[Gong, Xueyu; Cao, Jinjia] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.

通讯机构：

[Guo, Wenfeng] C

Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China.

语种：

英文

关键词：

collisionless damping;electron dynamics;geodesic acoustic mode;toroidal rotation

期刊：

Nuclear Fusion

ISSN：

0029-5515

年：

2016

卷：

期：

页码：

124001

DOI：

10.1088/0029-5515/56/12/124001

基金类别：

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11375085, 11475083, 41104094, 11405082, 11105175, 11475219]; National Magnetic Confinement Fusion Science Program of China [2013GB111002, 2014GB108002, 2015GB110001]

机构署名：

本校为第一机构

院系归属：

核科学技术学院

数理学院

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 veloci...

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

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