Effects of toroidal rotation on geodesic acoustic mode on tokamak plasmas

doi:10.16568/j.0254-6086.201701002

NUCLEAR FUSION AND PLASMA PHYSICS ›› 2017, Vol. 37 ›› Issue (1): 8-13.DOI: 10.16568/j.0254-6086.201701002

• Plasma Physics • Previous Articles Next Articles

Effects of toroidal rotation on geodesic acoustic mode on tokamak plasmas

XIE Bao-yi1, YU Jun1, GONG Xue-yu1, 2, CHEN You1, YU Jiang-mei1

(1. School of Mathematics and Physics, University of South China, Hengyang 421001; 2. School of Nuclear Science and Technology, University of South China, Hengyang 421001)

Received:2016-01-18 Revised:2016-11-22 Online:2017-03-15 Published:2017-03-15

托卡马克等离子体环向转动对测地声模的影响

谢宝艺1，余俊1，龚学余1, 2，陈铀1，余江妹1

(1. 南华大学数理学院，衡阳 421001；2. 南华大学核科学技术学院，衡阳 421001)

作者简介:谢宝艺(1990-)，男，衡阳人，硕士研究生，从事核聚变与等离子体物理研究。
基金资助:
国家自然科学基金(11375085，11475083，41104094，11405082)；国家磁约束核聚变能发展研究专项(2014GB108002，2013GB107001)；湖南省教育厅项目(14C0965)；湖南省研究生科研创新项目(2015scx01)

Abstract

Abstract:

With the dispersion relation derived from the gyrokinetic equation with the plasma equilibrium toroidal rotation, the frequencies and damping rates of the geodesic acoustic modes, low frequency modes and sound wave branch are investigated, respectively. The results show that the frequency of the geodesic acoustic mode could increase with the toroidal rotation Mach number, while the collisionless damping rate will decrease with the toroidal rotation Mach number rapidly. In addition, the frequencies and damping rates of the low frequency modes and sound wave branches will decrease with the toroidal rotation Mach number, and the influence of the toroidal rotation on the sound wave branches frequencies and damping rates are very small and can be neglected.

Key words: Toroidal rotation, Geodesic acoustic modes, Low frequency modes, Sound wave branches, Collisionless damping

摘要：

采用回旋动理学方程推导得到了环向转动托卡马克等离子体中测地声模的色散关系，分析了环向转动对测地声模、低频模和声波分支的频率以及无碰撞阻尼率的影响。结果表明，测地声模的频率会随着环向转动马赫数而逐渐增大，而其无碰撞阻尼率则会随着环向转动马赫数而迅速减小。此外，低频模和声波分支的频率以及无碰撞阻尼率都会随着环向转动马赫数而逐渐减小，其中环向转动对声波分支的频率以及无碰撞阻尼率的影响非常小，基本上可以忽略。

关键词: 环向转动, 测地声模, 低频模, 声波分支, 无碰撞阻尼

CLC Number:

TL61+2

XIE Bao-yi1, YU Jun1, GONG Xue-yu1, 2, CHEN You1, YU Jiang-mei1. Effects of toroidal rotation on geodesic acoustic mode on tokamak plasmas[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2017, 37(1): 8-13.

谢宝艺1，余俊1，龚学余1, 2，陈铀1，余江妹1. 托卡马克等离子体环向转动对测地声模的影响[J]. 核聚变与等离子体物理, 2017, 37(1): 8-13.

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Effects of toroidal rotation on geodesic acoustic mode on tokamak plasmas

托卡马克等离子体环向转动对测地声模的影响

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