Parametric decay of Alfven waves in multicomponent plasmas

被引：24

作者：

Gnavi, G

Galvao, RMO

Gratton, FT

Gomberoff, L

机构：

[1] UNIV BUENOS AIRES,DEPT FIS,RA-1428 BUENOS AIRES,DF,ARGENTINA

[2] UNIV SAO PAULO,INST FIS,BR-05389970 SAO PAULO,BRAZIL

[3] UNIV CHILE,FAC CIENCIAS,DEPT FIS,SANTIAGO,CHILE

来源：

PHYSICAL REVIEW E | 1996年 / 54卷 / 04期

关键词：

D O I：

10.1103/PhysRevE.54.4112

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：

The parametric couplings of a finite amplitude Alfven wave in a multicomponent plasma are investigated including the effect of damping. The important case of a fusion plasma with deuterium, tritium, and ct particle ions, heated by neutral beam injection, is analyzed in detail. Because of the modification in the linear dispersion relation caused by the drifting ions, there appear many couplings to sound waves and an electromagnetic modulational in stability. The threshold on the pump amplitude is determined as a function of the damping rates. The relevance of our results to the stability of toroidal Alfven eigenmodes in tokamaks is discussed.

引用

页码：4112 / 4120

页数：9

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