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The stability of the internal kink mode is usually described within the context of the ideal MHD model. Toroidal effects, associated with the coupling of the dominant m = 1 component to the m = 2 and m = 0 components of the eigenfunction, yield a stabilising effect. However, the ideal MHD model is adequate to account fully for the physical effects relating to 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 stabilising effect, which can be used to determine the actual stability of the internal kink mode.

Additional information

Authors: ROMANELLI F, ENEA, Centro Ricerche Energia Frascati, Roma (IT);FOGACCIA G, ENEA, Centro Ricerche Energia Frascati, Roma (IT)
Bibliographic Reference: Paper presented: 20th EPS Conference on Controlled Fusion and Plasma Physics, Lisboa (PT), July 26-30, 1993
Availability: Available from (1) as Paper EN 37551 ORA
Record Number: 199310879 / Last updated on: 1994-11-29
Original language: en
Available languages: en