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Dust-acoustic solitary waves in a dusty plasma with dust of opposite polarity and vortex-like ion distribution

Published online by Cambridge University Press:  14 June 2013

M. A. ZAHRAN ,
E. K. EL-SHEWY  and
H. G. ABDELWAHED
M. A. ZAHRAN
Affiliation:
Physics Department, College of Sciences and Humanitarian Studies, Salman Bin Abdulaziz University, Al-Kharj, Saudi Arabia Theoretical Physics Group, Faculty of Science, Mansoura University, Mansoura, Egypt (e_k_el_shewy@mans.edu.eg, emadshewy@yahoo.com)
E. K. EL-SHEWY
Affiliation:
Theoretical Physics Group, Faculty of Science, Mansoura University, Mansoura, Egypt (e_k_el_shewy@mans.edu.eg, emadshewy@yahoo.com)
H. G. ABDELWAHED
Affiliation:
Physics Department, College of Sciences and Humanitarian Studies, Salman Bin Abdulaziz University, Al-Kharj, Saudi Arabia Theoretical Physics Group, Faculty of Science, Mansoura University, Mansoura, Egypt (e_k_el_shewy@mans.edu.eg, emadshewy@yahoo.com)
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Abstract

The nonlinear propagation of small but finite-amplitude dust-acoustic solitary waves in an unmagnetized, collisionless dusty plasma has been investigated. The fluid model is a generalization to the model of Mamun and Shukla to a more realistic space dusty plasma in different regions of space, viz., cometary tails, mesosphere, and Jupiter's magnetosphere, by considering a four-component dusty plasma consisting of the charged dusty plasma of opposite polarity, isothermal electrons and vortex-like ion distributions in the ambient plasma. A reductive perturbation method was employed to obtain a modified Korteweg–de Vries equation for the first-order potential. The effect of the presence of a positively charged dust fluid, the specific charge ratio μ, the temperature of the positively charged dust fluid, the ratio of constant temperature of free hot ions and the constant temperature of trapped ions, and ion temperature on the soliton properties and dusty grains energy are discussed.

Type
Papers
Information
Journal of Plasma Physics , Volume 79 , Issue 5 , October 2013 , pp. 859 - 865
Copyright
Copyright © Cambridge University Press 2013 

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