Ion drift wave induced plasma convection at the magnetopause

Details Ion drift wave induced plasma convection at the magnetopause Ion drift wave induced plasma convection at the magnetopause

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.2538s&link_type=abstract

Journal of Geophysical Research, vol. 87, Apr. 1, 1982, p. 2538-2540.

Physics

Convection, Electrostatic Waves, Ionic Waves, Magnetohydrodynamic Stability, Magnetopause, Plasma Diffusion, Coupled Modes, Electron Plasma, Ion Motion, Ion Temperature, Low Frequencies, Nonuniform Plasmas, Plasma Drift, Plasma Turbulence, Plasma Waves, Ponderomotive Forces, Vortices

Scientific paper

It is suggested that the ion drift wave could be a candidate for the low-frequency electrostatic fluctuations at the magnetopause. Is is noted that nonlinear mode coupling of ion drift waves can create purely growing convective cells and that the latter may bring about anomalous plasma diffusion across the ambient magnetic field. In discussing the model coupling, it is pointed out that the dc ponderomotive force, which originates from the beating of the two ion drift waves of identical frequency, generates purely growing zero-frequency vortex turbulence. It is shown that, in a nonuniform plasma where the ion temperature is much greater than the electron temperature, the short-wavelength ion drift waves are for the most part unstable.

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