Electron diamagnetism and toroidal coupling of tearing modes
作者:
S. C. Cowley,
R. J. Hastie,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1988)
卷期:
Volume 31,
issue 3
页码: 426-428
ISSN:0031-9171
年代: 1988
DOI:10.1063/1.867019
出版商: AIP
数据来源: AIP
摘要:
Using a simple model for the layer of the tearing mode, it is demonstrated that toroidally coupled tearing modes with two rational surfaces are most unstable when the &ohgr;*’s of the electrons at the rational surfaces are equal. The onset of instability may then occur because of the tuning of &ohgr;* rather than the passage of &Dgr;’‐like quantities through zero. This mechanism for the onset of instability is sharp since the resonance is narrow. The effect of toroidal rotation is also discussed.
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