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The latest PEST-3 code for plasma with up-down asymmetric cross-section has been used to compute the outer region matching data of a two-rational surface ITER-shaped equilibrium. It is found that, irrespective of the boundary conditions, the interior rational surface (m = 2, n = 1) is unstable at moderate resistivity. As the value of eta approaches 1.0 E-6 to 1.0 E-9, finite pressure gradient effects become important and the growth rate becomes complex before being stabilised. The lower limit requires an electron temperature exceeding 1.6 keV, to satisfy linear resistive stability. This threshold is very sensitive to the local pressure profile.

Additional information

Authors: PLETZER A, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH);MANICKAM J, Princeton University, Plasma Physics Laboratory (US);MONTICELLO D A, Princeton University, Plasma Physics Laboratory (US)
Bibliographic Reference: Article: Proceedings of the 21st EPS Conference on Controlled Fusion and Plasma Physics, pp. 552-555
Record Number: 199510147 / Last updated on: 1995-08-22
Original language: en
Available languages: en