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[en] Short communication
Journal
[en] A general method for studying the ideal and resistive MHD stability of plasma configurations with line-tying is presented, and applied to the case of the m=1 kink mode in coronal loops. The method consists in a truncated Fourier series approach applied to the linearized equations of motion, and is found to converge rapidly with the order of the truncation. Different models of the boundary conditions at the corona-photosphere interface are discussed, and the growth rates of unstable modes are calculated for equilibrium profiles both with and without a reversal in the field component connecting to the photosphere. The relevance of these modes to compace loop flares is assessed. (author). 9 refs.; 3 figs
Source
Guyenne, T.D.; Hunt, J.J. (European Space Research and Technology Centre, Noordwijk (Netherlands)) (eds.); ESA-SP; no. 285(v. 2); 332 p; 1989; p. 105-109; ESTEC; Noordwijk (Netherlands); International workshop on reconnection in space plasma; Potsdam (German Democratic Republic); 5-9 Sep 1988; ISSN 0379-6566; 
[en] The ideal MHD model is inadequate to fully account for the physical effects relevant for a relatively weak instability as the internal kink mode. In particular, perpendicular compressibility of the thermal trapped and barely circulating particles can produce a significant stabilizing effect which can determine, in situation of practical interest, the actual stability of the internal kink mode. It has been shown that the effect of compressibility has a strong stabilizing influence on the internal kink mode
Source
Ente per le Nuove Tecnologie, l'Energia e l'Ambiente (ENEA), Roma (Italy); Associazione EURATOM-ENEA sulla Fusione, Area Energia, Dipartimento Fusione, Centro Ricerche Energia, Frascati (Italy); 56 p; ISSN 1120-5598; ; Jul 1993; p. 33-36; 20. EPS conference on controlled fusion and plasma physics; Lisbon (Portugal); 26-30 Jul 1993; Country of input: International Atomic Energy Agency (IAEA); 5 refs
; Jul 1993; p. 33-36; 20. EPS conference on controlled fusion and plasma physics; Lisbon (Portugal); 26-30 Jul 1993; Country of input: International Atomic Energy Agency (IAEA); 5 refs
[en] The pursuit of steady-state economic production of thermonuclear fusion energy has led to research on the stabilization of the external kink and the resistive wall mode. Advances in both experiment and theory, together with improvements in diagnostics, heating and feedback methods have led to substantial and steady progress in the understanding and stabilization of these instabilities. Many of the theory and experimental techniques and results that have been developed are useful not only for the stabilization of the resistive wall mode. They can also be used to improve the general performance of fusion confinement devices. The conceptual foundations and experimental results on the stabilization of the external kink and the resistive wall mode are reviewed. (topical review)
Journal
No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; ; (no.4); p. 924
; (no.4); p. 924
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