Effects of sheared toroidal plasma rotation on the internal kink mode in the banana regime

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摘要：

The stability of the ideal internal kink mode is calculated, taking into account the kinetic response of thermal ions in the external region and the singular layer. By extending the collisionless dispersion relation to include the equilibrium radial electric field it is found that the stability of the internal kink mode depends sensitively on sheared toroidal plasma rotation. The sheared toroidal plasma rotation can increase the critical pressure for internal kink mode displacements typically by a factor of two.

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Theoretical or Mathematical/ dispersion relations kink instability plasma flow plasma kinetic theory plasma pressure plasma toroidal confinement/ sheared toroidal plasma rotation internal kink mode banana regime stability kinetic response thermal ions singular layer collisionless dispersion relation equilibrium radial electric field critical pressure/ A5235P Plasma instabilities A5230 Plasma flow magnetohydrodynamics A5225L Plasma temperature and density A5255G Plasma in torus (stellarator, tokamak, etc.) A5255P Confinement in fusion experiments A5225D Plasma kinetic equations