Ideal MHD ballooning stability in the vicinity of a separatrix

C.M. Bishop, P. Kirby, J.W. Connor, R.J. Hastie, J.B. Taylor

Research output: Contribution to journalArticlepeer-review

Abstract

Using a model tokamak equilibrium, the influence of a magnetic separatrix on the stability of the plasma against ideal MHD ballooning modes is investigated. It is found that there is no significant stabilizing effect from the strong global shear near the separatrix, but rather that marginal stability is controlled mainly by the poloidal position of the X-point. A physical interpretation of these results is given.
Original languageEnglish
Pages (from-to)1579-1585
Number of pages6
JournalNuclear Fusion
Volume24
Issue number12
DOIs
Publication statusPublished - 1984

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