Vortex structures in magnetized plasmas with sheared dust flow

Details Vortex structures in magnetized plasmas with sheared dust flow Vortex structures in magnetized plasmas with sheared dust flow

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993p%26ss...41..401s&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 41, no. 5, p. 401-403.

Computer Science

8

Cosmic Dust, Electrostatic Waves, Magnetohydrodynamic Stability, Plasma Equilibrium, Plasma Oscillations, Shear Flow, Nonlinear Equations, Plasma Composition, Plasma Density

Scientific paper

Nonlinear mode coupling equations are derived for weakly interactive short-wavelength electrostatic waves in nonuniform dusty magnetized plasmas with equilibrium density and magnetic field-aligned dust flow velocity gradients, using the hydrodynamic models for the electron and dust fluids and a kinetic description for the ion fluid. It is shown that the nonlinear stationary state of the Kelvin-Helmholtz (K-H) instability involving sheared dust flow can be represented as a dipolar vortex. The conditions under which the K-H instabilities arise are determined.

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