Stability of ideal and resistive internal kink modes in toroidal geometry

The stability of the ideal and resistive m=1 internal modes is investigated for tokamak equilibria having a variety of different q(r) profiles, including nonmonotonic q(r) with multiple q=1 surfaces. Detailed comparisons between analytic theory and numerical results from a linear toroidal magnetohyd...

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Bibliographic Details
Published in:The Physics of fluids (1958) 1987-06, Vol.30 (6), p.1756-1766
Main Authors: Hastie, R. J., Hender, T. C., Carreras, B. A., Charlton, L. A., Holmes, J. A.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Magnetic confinement and equilibrium
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
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Summary:The stability of the ideal and resistive m=1 internal modes is investigated for tokamak equilibria having a variety of different q(r) profiles, including nonmonotonic q(r) with multiple q=1 surfaces. Detailed comparisons between analytic theory and numerical results from a linear toroidal magnetohydrodynamic code are presented. Particular attention is paid to the study of equilibria that are near marginal stability.
ISSN:0031-9171
2163-4998
DOI:10.1063/1.866242