Kinetic theory of MHD instabilities in a nonuniform plasma

Details Kinetic theory of MHD instabilities in a nonuniform plasma Kinetic theory of MHD instabilities in a nonuniform plasma

Mar 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976soph...47..325h&link_type=abstract

(NASA, IAU, IUGG, and International Council of Scientific Unions, Workshop on Flare Build-up Study, Falmouth, Mass., Sept. 8-11,

Physics

3

Kinetic Theory, Magnetohydrodynamic Stability, Magnetohydrodynamic Waves, Nonuniform Plasmas, Surface Waves, Cold Plasmas, Kelvin-Helmholtz Instability, Particle Acceleration, Plasma Heating, Plasma Interactions, Plasma Resonance

Scientific paper

Most of the MHD instabilities originating from the nonuniformity of a plasma excite a MHD surface wave. When the excited wave has a frequency corresponding to the local shear Alfven wave resonance, the surface wave resonantly mode converts to the kinetic Alfven wave, the Alfven wave having a perpendicular wavelength comparable to the ion gyroradius and being able to propagate across the magnetic field. Linear and nonlinear effects of this kinetic Alfven wave on the plasma including particle acceleration and heating are discussed. A specific example for the case of a MHD Kelvin-Helmholtz instability is given.

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