Linear theory of electromagnetic instabilities in plasmas with a hollow q-profile
- 1 September 1982
- journal article
- Published by IOP Publishing in Nuclear Fusion
- Vol. 22 (9) , 1191-1197
- https://doi.org/10.1088/0029-5515/22/9/005
Abstract
Electromagnetic instabilities in a plasma with a hollow q-profile are investigated. The tearing mode is found to be unstable even in the absence of external driving magnetic energy and can manifest itself either as the 'binary-tearing' mode with two peaks near the rational surfaces or as the 'centred' mode. The centred mode has no classical analogue and a higher growth rate than the 'double-tearing' limit. The double-tearing mode of Pritchett et al. is a special case of a binary-tearing mode.Keywords
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