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 language | English (US) |
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Article number | 102507 |
Journal | Physics of Plasmas |
Volume | 19 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2012 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics