Edge Plasma Boundary Layer Generated By Kink Modes in Tokamaks
Authors: L.E. Zakharov
Abstract:
This paper describes the structure of the electric current generated by external wall touching and
free boundary kink modes at the plasma edge using the ideally conducting plasma model. Both kinds
of modes generate a δ-functional surface current at the plasma edge. Free boundary kink modes
also perturb the core plasma current, which in the plasma edge compensates the difference between
the δ-functional surface currents of free boundary and wall touching kink modes. In addition, the
resolution of an apparent paradox with the pressure balance across the plasma boundary in the
presence of the surface currents is provided.
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Submitted to: Physics of Plasmas (November 2010)
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Download PPPL-4575 (pdf 556 KB 10 pp)
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