Continuum resonance induced electromagnetic torque by a rotating plasma response to static resonant magnetic perturbation field

Yueqiang Liu, J. W. Connor, S. C. Cowley, C. J. Ham, R. J. Hastie, T. C. Hender

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

A numerical study is carried out, based on a simple toroidal tokamak equilibrium, to demonstrate the radial re-distribution of the electromagnetic torque density, as a result of a rotating resistive plasma (linear) response to a static resonant magnetic perturbation field. The computed electromagnetic torque peaks at several radial locations even in the presence of a single rational surface, due to resonances between the rotating response, in the plasma frame, and both Alfvén and sound continuum waves. These peaks tend to merge together to form a rather global torque distribution, when the plasma resistivity is large. The continuum resonance induced net electromagnetic torque remains finite even in the limit of an ideal plasma.

Original languageEnglish (US)
Article number102507
JournalPhysics of Plasmas
Volume19
Issue number10
DOIs
StatePublished - Oct 1 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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