Electron Landau damping of toroidal Alfven eigenmodes

被引：13
|
作者：
Candy, J
机构：
[1] JET Joint Undertaking, Abingdon, Oxfordshire
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 1996年 / 38卷 / 06期
关键词：
D O I：
10.1088/0741-3335/38/6/002
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
A method to calculate the electron Landau damping of toroidal Alfven eigenmodes (TAE) is presented. Owing to the presence of a small current produced by thermal electrons near the trapped-passing boundary, a jump in the electrostatic potential near the k(parallel to) = 0 surface occurs. An analytic expression for this jump is derived in the low-beta, large-aspect-ratio limit, and is suitable for incorporation into either numerical eigenvalue codes or analytic models. In the limit of small magnetic shear, the calculation is performed analytically, giving a simple local expression for the damping.
引用
收藏
页码：795 / 801
页数：7
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