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Large-amplitude electrostatic solitary structures in dusty plasmas with vortex-like variable charge dust distribution and non-isothermal trapped electrons

Published online by Cambridge University Press:  01 April 2009

MOULOUD TRIBECHE
MOULOUD TRIBECHE*
Affiliation:
Plasma Physics Group, Theoretical Physics Laboratory, Faculty of Sciences-Physics, University of Bab-Ezzouar, USTHB, B.P. 32, El Alia, Algiers 16111, Algeria ([email protected], [email protected])
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Abstract

The recent analysis of large-amplitude solitary potentials in a charge varying dusty plasma with trapped dust particles (Tribeche, M. 2005 Phys. Plasmas12, 072304) is extended to include the electron trapping self-consistently. The non-isothermal trapped electron charging is investigated based on the orbit motion limited approach. It is found that the nonlinear localized potential structure enlarges when the electrons deviate from isothermality. The effect of this deviation is more significant under certain conditions. The dust particles are locally expelled and pushed out of the region of soliton localization as the electrons evolve far away from their thermodynamic equilibrium.

Type
Papers
Information
Journal of Plasma Physics , Volume 75 , Issue 2 , April 2009 , pp. 259 - 272
Copyright
Copyright © Cambridge University Press 2008

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