MODE-COUPLING EFFECTS ON ALPHA-PARTICLE-DRIVEN LONG-WAVELENGTH ALFVEN-WAVE INSTABILITY

被引：4

作者：

GANG, FY ^{[1
]}

LEBOEUF, JN ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,OAK RIDGE,TN 37830

来源：

PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1993年 / 5卷 / 08期

关键词：

D O I：

10.1063/1.860713

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：

It is demonstrated both analytically and numerically that mode couplings play an important role in the nonlinear evolution of alpha-particle-driven long wavelength Alfven wave instabilities. The mode coupling process is characterized by a beat between two linearly unstable Alfven waves having opposite frequencies, which generates a linearly stable, static (zero frequency) mode. The backreaction of the static mode tends to stabilize the Alfven instabilities by eliminating the phase shift between the alpha pressure and the Alfven fluctuations.

引用

页码：2736 / 2738

页数：3

共 9 条

[1] SATURATION OF A SINGLE-MODE DRIVEN BY AN ENERGETIC INJECTED BEAM .3. ALFVEN-WAVE PROBLEM [J].