What is the "beta-induced Alfven eigenmode?"

被引：89

作者：

Heidbrink, WW ^{[1
]}

Ruskov, E

Carolipio, EM

Fang, J

van Zeeland, MA

James, RA

机构：

[1] Univ Calif Irvine, Irvine, CA 92697 USA

[2] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

来源：

PHYSICS OF PLASMAS | 1999年 / 6卷 / 04期

关键词：

D O I：

10.1063/1.873359

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：

An instability with a lower frequency than the toroidicity-induced Alfven eigenmode was initially identified as a beta-induced Alfven eigenmode (BAE). Instabilities with the characteristic spectral features of this "BAE'' are observed in a wide variety of tokamak plasmas, including plasmas with negative magnetic shear. These modes are destabilized by circulating beam ions and they transport circulating beam ions from the plasma core. The frequency scalings of these "BAEs'' are compared to theoretical predictions for Alfven modes, kinetic ballooning modes, ion thermal velocity modes, and energetic particle modes. None of these simple theories match the data. (C) 1999 American Institute of Physics. [S1070-664X(99)00204-9].

引用

页码：1147 / 1161

页数：15

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[1] Improved operation of the Michelson interferometer electron cyclotron emission diagnostic on DIII-D [J].