On the Toroidal Plasma Rotations Induced by Lower Hybrid Waves

doi:10.2172/1056357

GSTDTAP > 地球科学

DOI	10.2172/1056357
报告编号	PPPL-4831
来源ID	OSTI ID: 1056357
	On the Toroidal Plasma Rotations Induced by Lower Hybrid Waves
	Guan, Xiaoyin; Qin, Hong; Liu, Jian; Fisch, Nathaniel J.
	2012-11-14
出版年	2012
语种	英语
国家	美国
出版者	Physics of Plasmas (November 2012)
领域	地球科学
英文摘要	A theoretical model is developed to explain the plasma rotations induced by lower hybrid waves in Alcator C-Mod. In this model, torodial rotations are driven by the Lorentz force on the bulk electron flow across flux surfaces, which is a response of the plasma to the resonant-electron flow across flux surfaces induced by the lower hybrid waves. The flow across flux surfaces of the resonant electrons and the bulk electrons are coupled through the radial electric fi eld initiated by the resonant electrons, and the friction between ions and electrons transfers the toroidal momentum to ions from electrons. An improved quasilinear theory with gyrophase dependent distribution function is developed to calculate the perpendicular resonant-electron flow. Toroidal rotations are determined using a set of fluid equations for bulk electrons and ions, which are solved numerically by a fi nite- difference method. Numerical results agree well with the experimental observations in terms of flow pro file and amplitude. The model explains the strong correlation between torodial flow and internal inductance observed experimentally, and predicts both counter-current and co-current flows, depending on the perpendicular wave vectors of the lower hybrid waves. __________________________________________________
英文关键词	Lower Hybrid Waves Transport Theory
URL	查看原文
来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/5810
专题	地球科学
推荐引用方式 GB/T 7714	Guan, Xiaoyin,Qin, Hong,Liu, Jian,et al. On the Toroidal Plasma Rotations Induced by Lower Hybrid Waves:Physics of Plasmas (November 2012),2012.