Edge Plasma Boundary Layer Generated By Kink Modes in Tokamaks

Zakharov, L.E.

Princeton University. Plasma Physics Laboratory.

关键词: Layers;    70 Plasma Physics And Fusion Technology;    Surfaces Edge Plasma, Disruptions, Kink Instability, Numerical Methods, Numerical Simulation, Magnetohydridtbanucs (Mhd), Tokamaks;    Balances;    Resolution;   

DOI  :  10.2172/1001664
RP-ID  :  PPPL-4575
RP-ID  :  DE-ACO2-09CH11466
RP-ID  :  1001664

美国|英语

来源: UNT Digital Library

【 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 δ-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.