Edge Plasma Boundary Layer Generated By Kink Modes in Tokamaks

[摘要] This paper describes the structure of the electric current generated by external kink modes at the plasma edge using the ideally conducting plasma model. It is found that the edge current layer is created by both wall touching and free boundary kink modes. Near marginal stability, the total edge current has a universal expression as a result of partial compensation of the ??-functional surface current by the bulk current at the edge. The resolution of an apparent paradox with the pressure balance across the plasma boundary in the presence of the surface currents is provided.

[发布日期] 2010-11-22

[学科分类] 原子、分子光学和等离子物理

[关键词] BALANCES;BOUNDARY LAYERS;ELECTRIC CURRENTS;LAYERS;PLASMA;RESOLUTION;STABILITY;SURFACES Edge Plasma;Disruptions;Kink Instability;Numerical Methods;Numerical Simulation;Magnetohydridtbanucs (MHD);Tokamak