Abstract
By means of the two-fluid model of Braginskii [Reviews of Plasma Physics, edited by M. A. Leontovich (Consultants Bureau, New York, 1965), Vol. I, p. 205], this paper derives a set of nonlinear differential equations governing the dynamics of fully toroidal low-frequency electromagnetic waves in an inhomogeneous electron-ion plasma immersed in a nonuniform magnetic field. The effects of equilibrium electron and ion pressure gradients, magnetic drifts caused by the nonuniform magnetic field, as well as the contribution of heat fluxes in the particle-energy transport equations are incorporated. In the linear limit, expressions for the ion and electron number-density perturbations together with a new dispersion relation for fully toroidal electromagnetic waves are obtained. A new long-wavelength electromagnetic drift wave instability is shown to exist in a nonuniform magne- tized electron plasma. The formation of dipolar vortices in the two-dimensional ion-temperature-gradient-driven electrostatic drift wave turbulence has been demonstrated.
Published Version
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