Measurement of the resistive-wall-mode stability in a rotating plasma using active MHD spectroscopy

被引：86

作者：

Reimerdes, H ^{[1
]}

Chu, MS

Garofalo, AM

Jackson, GL

La Haye, RJ

Navratil, GA

Okabayashi, M

Scoville, JT

Strait, EJ

机构：

[1] Columbia Univ, New York, NY 10027 USA

[2] Gen Atom Co, San Diego, CA USA

[3] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.93.135002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The stability of the resistive-wall mode (RWM) in DIII-D plasmas above the conventional pressure limit, where toroidal plasma rotation in the order of a few percent of the Alfven velocity is sufficient to stabilize the n=1 RWM, has been probed using the technique of active MHD spectroscopy at frequencies of a few Hertz. The measured frequency spectrum of the plasma response to externally applied rotating resonant magnetic fields is well described by a single-mode approach and provides an absolute measurement of the damping rate and the natural mode rotation frequency of the stable RWM.

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页码：135002 / 1

页数：4

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