Drift ballooning instabilities in tokamak edge plasmas

被引：32
|
作者：
Hastie, RJ
Ramos, JJ
Porcelli, F
机构：
[1] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA
[2] UKAEA EURATOM Fus Assoc, Culham Sci Ctr, Abingdon, Oxon, England
[3] Politecn Torino, Ist Nazl Fis Mat, Turin, Italy
来源：
PHYSICS OF PLASMAS | 2003年 / 10卷 / 11期
关键词：
D O I：
10.1063/1.1612499
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 linear stability of high-toroidal-number drift-ballooning modes in tokamaks is investigated with a model that includes resistive and viscous dissipation, and assumes the mode frequency to be comparable to both the sound and diamagnetic frequencies. The coupled effect of ion drift waves and electron drift-acoustic waves is shown to be important, resulting in destabilization over an intermediate range of toroidal mode numbers. The plasma parameters where the assumed orderings hold would be applicable to the edge conditions in present day tokamaks, so these instabilities might be related to the observed quasicoherent edge-localized fluctuations. (C) 2003 American Institute of Physics.
引用
收藏
页码：4405 / 4412
页数：8
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