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Electrostatic nonlinear supersolitons in dusty plasmas

Part of: Physics of Dusty Plasmas

Published online by Cambridge University Press:  25 June 2014

Frank Verheest
Frank Verheest*
Affiliation:
Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B–9000 Gent, Belgium; School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000, South Africa
*
†Email address for correspondence: frank.verheest@ugent.be
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Abstract

Using the Sagdeev pseudopotential method, the properties of negative dust-acoustic supersolitons are investigated in a plasma comprising cold negative dust and Boltzmann and Cairns non-thermal positive ions. Supersolitons have electric field profiles with additional wiggles on traditional bipolar structures, and their existence requires pseudopotentials having two sub-wells before a root is reached. Once the existence ranges are determined in parameter space, typical pseudopotential, supersoliton and electric field profiles can be easily generated. Their characteristics are very robust and yield dust and dust-ion-acoustic supersolitons in a wide range of compositional models and parameter ranges.

Type
Research Article
Information
Journal of Plasma Physics , Volume 80 , Issue 6 , December 2014 , pp. 787 - 793
Copyright
Copyright © Cambridge University Press 2014 

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