Solitary potentials in dusty plasmas

It is found that a dusty plasma with inertial dust fluid and Boltzmann distributed ions admits only negative solitary potentials associated with nonlinear dust‐acoustic waves. The dynamics of small‐amplitude disturbances is governed by the Korteweg–de Vries (KdV) equation, the stationary solution of...

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Bibliographic Details
Published in:Physics of plasmas 1996-02, Vol.3 (2), p.702-704
Main Authors: Mamun, A. A., Cairns, R. A., Shukla, P. K.
Format: Article
Language:English
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Summary:It is found that a dusty plasma with inertial dust fluid and Boltzmann distributed ions admits only negative solitary potentials associated with nonlinear dust‐acoustic waves. The dynamics of small‐amplitude disturbances is governed by the Korteweg–de Vries (KdV) equation, the stationary solution of which assumes the inverted bell‐shaped secant hyperbolic squared profile. The associated dust and ion density perturbations are, on the other hand, positive. The solitary potentials can be identified as nonlinear structures in low‐temperature dusty plasmas such as those in laboratory and astrophysical environments.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.871905