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Abstract

Large pressure gradients and current density at the plasma edge and accompanying edge-localized magnetohydrodynamic (MHD) instabilities are typical for H-mode discharges. Low-n external kink modes are a possible cause of the instabilities. The paper mostly deals with external kink modes driven by a finite current density at the plasma boundary (so called peeling modes).

The stability of kink modes in divertor configurations with plasma outside the separatrix is very sensitive to the boundary conditions set at open field lines. The choice of boundary conditions and kink mode stability calculations for the divertor configurations are discussed. .

Additional information

Authors: DEGTYAREV L, Keldysh Institute of Applied Mathematics, Moscow (RU);MARTYNOV A, Keldysh Institute of Applied Mathematics, Moscow (RU);MEDVEDEV S, Keldysh Institute of Applied Mathematics, Moscow (RU);TROYON F, Ecole Polytechnique Fédérale de Lausanne, Centre de Recherches en Physiques des Plasmas (CH);VILLARD L, Ecole Polytechnique Fédérale de Lausanne, Centre de Recherches en Physiques des Plasmas (CH)
Bibliographic Reference: Article: Proceedings of the 23rd European Physical Society Conference on Controlled Fusion and Plasma Physics, Kiev (UA), June 24-28, 1996, pp. 1191-1194
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