Sheared Flow Driven Drift Instability and Vortices in Dusty Plasmas with Opposite Polarity

Low frequency electrostatic dust drift acoustic (DDA) waves are studied in an inhomogeneous dust magnetoplasma comprised of dust components of opposite polarity, Boltzmannian ions, and nonextensive distributed electrons. The magnetic-field-aligned dust sheared flow drives the electrostatic drift waves in the presence of ions and electrons. The sheared flow decreases or increases the frequency of the DDA wave, mostly depending on its polarity. The conditions of instability for this mode, with nonextensivity and dust streaming effects, are discussed. The nonlinear dynamics is then investigated for the DDA wave by deriving the Koeteweg-deVries (KdV) nonlinear equation. The KdV equation yields an electrostatic structure in the form of a DDA soliton. The relevancy of the work to laboratory four component dusty plasmas is illustrated.

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Drift dust acoustic soliton in the presence of field-aligned sheared flow and nonextensivity effects

Shah

Ahmad

Farooq

et al. 2018

Physics of Plasmas

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Sheared Flow Driven Drift Instability and Vortices in Dusty Plasmas with Opposite Polarity

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Drift dust acoustic soliton in the presence of field-aligned sheared flow and nonextensivity effects

Drift dust acoustic soliton in the presence of field-aligned sheared flow and nonextensivity effects

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