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Solitary and blow-up electrostatic excitations in rotating magnetized electron–positron–ion plasmas

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Published 25 March 2009 Published under licence by IOP Publishing Ltd
, , Citation W M Moslem et al 2009 New J. Phys. 11 033028 DOI 10.1088/1367-2630/11/3/033028

1367-2630/11/3/033028

Abstract

The nonlinear dynamics of a rotating magnetoplasma consisting of electrons, positrons and stationary positive ions is considered. The basic set of hydrodynamic and Poisson equations are reduced to a Zakharov–Kuznetsov (ZK) equation for the electric potential. The ZK equation is solved by applying an improved modified extended tanh-function method (2008 Phys. Lett. A 372 5691) and its characteristics are investigated. A set of new solutions are derived, including localized solitary waves, periodic nonlinear waveforms and divergent (explosive) pulses. The characteristics of these nonlinear excitations are investigated in detail.

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10.1088/1367-2630/11/3/033028