Shear driven electromagnetic drift-waves in a nonuniform dense magnetoplasma

Tariq, Sabeen; Mirza, Arshad M.; Masood, Waqas
August 2011
Physics of Plasmas;Aug2011, Vol. 18 Issue 8, p082708
Academic Journal
Linear characteristic properties of high- and low-frequency (in comparison with the cyclotron frequency) electromagnetic drift-waves are studied in a nonuniform, dense magnetoplasma (composed of electrons and ions), in the presence of parallel (magnetic field-aligned) velocity shear, by using quantum magnetohydrodynamic model. By applying the drift-approximation (viz., |∂ t|<ωci<ωce) to the quantum momentum equations, together with the continuity equations and the Poisson equation, we derive the governing equations for electromagnetic drift-waves with the shear flow. These linear equations are then Fourier transformed to obtain the dispersion relation in both high-frequency and low-frequency regimes. The dispersion relations are then discussed under various limiting cases.


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