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Sheared flow-driven vortices and solitary waves in a non-uniform plasma with negative ions and non-thermal distributed electrons

Published online by Cambridge University Press:  21 December 2012

A. MUSHTAQ  and
ATTAULLAH SHAH
A. MUSHTAQ
Affiliation:
Department of Physics, Abdul Wali Khan University, Mardan 23200, Pakistan ([email protected]) National Center for Physics, Shahdrah Valley Road, Islamabad 44000, Pakistan
ATTAULLAH SHAH
Affiliation:
Institute of Physics & Electronics, University of Peshawar, Peshawar 25000, Pakistan
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Abstract

The coupled drift-ion acoustic (DIA) waves in an inhomogeneous magnetoplasma having negative and positive ions can be driven by the parallel sheared flows in the presence of Cairns distributed non-thermal electrons. The coupled DIA waves can become unstable due to shear flows. The conditions of modes instability are discussed with effects of non-thermal electrons. These are the excited modes and start interactions among themselves. The interaction is governed by the Hasegawa–Mima equations with analytical solutions in the form of a vortex chain and dipolar vortex. On the other hand, for scalar nonlinearity the Kortweg deVries-type equation is obtained with solitary wave solution. Possible application of the work to the space and laboratory plasmas are highlighted.

Type
Papers
Information
Journal of Plasma Physics , Volume 79 , Issue 5 , October 2013 , pp. 479 - 487
Copyright
Copyright © Cambridge University Press 2012 

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