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Analytic study on low- $n$ external ideal infernal modes in tokamaks with large edge pressure gradients

  • Daniele Brunetti (a1), J. P. Graves (a2), E. Lazzaro (a1), A. Mariani (a1), S. Nowak (a1), W. A. Cooper (a2) and C. Wahlberg (a3)...
Abstract

The problem of pressure driven infernal type perturbations near the plasma edge is addressed analytically for a circular limited tokamak configuration which presents an edge flattened safety factor. The plasma is separated from a metallic wall, either ideally conducting or resistive, by a vacuum region. The dispersion relation for such types of instabilities is derived and discussed for two classes of equilibrium profiles for pressure and mass density.

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Corresponding author
Email address for correspondence: brunetti@ifp.cnr.it
References
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