Open AccessEdge Plasma Boundary Layer Generated By Kink Modes in Tokamaks
Author(s) -
L E Zakharov
Publication year - 2010
Language(s) - English
Resource type - Reports
DOI - 10.2172/1001664
Subject(s) - tokamak , enhanced data rates for gsm evolution , current (fluid) , plasma , boundary layer , boundary (topology) , physics , mechanics , electric current , atomic physics , materials science , mathematics , engineering , mathematical analysis , telecommunications , thermodynamics , quantum mechanics
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