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Nonlinear propagation of dust ion-acoustic waves in a dusty quantum magnetoplasma

Published online by Cambridge University Press:  01 April 2008

AMAR P. MISRA
Affiliation:
High Energy Physics Division, Department of Physics, Jadavpur University, Kolkata 700 032, India Department of Mathematics, Siksha Bhavana, Visva-Bharati University, Santiniketan 731 235, India (apmisra@gmail.com)
S. SAMANTA
Affiliation:
Department of Basic Science and Humanities, College of Engineering and Management, Kolaghat, West Medinipore 721 171, India
A. R. CHOWDHURY
Affiliation:
High Energy Physics Division, Department of Physics, Jadavpur University, Kolkata 700 032, India

Abstract

A quantum magnetohydrodynamic model is used to investigate the nonlinear propagation of dust ion-acoustic waves in a three-component quantum plasma composed of electrons, positively charged ions and immobile charged dust grains. Using the standard reductive perturbation technique, a Korteweg–de Vries equation is derived containing the quantum statistical and diffraction effects. There exists a critical value of the non-dimensional parameter H, proportional to the quantum diffraction, beyond which the bright soliton propagation is not possible with positive phase velocity. The effects of obliqueness, charged dust impurity and external magnetic field as well as the quantum mechanical effects are investigated numerically on the profiles of the amplitude and width of the solitary waves.

Type
Papers
Copyright
Copyright © Cambridge University Press 2007

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