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Title: Coupled nonlinear drift and ion acoustic waves in dense dissipative electron-positron-ion magnetoplasmas

Abstract

Linear and nonlinear propagation characteristics of drift ion acoustic waves are investigated in an inhomogeneous electron-positron-ion (e-p-i) quantum magnetoplasma with neutrals in the background using the well known quantum hydrodynamic model. In this regard, Korteweg-de Vries-Burgers (KdVB) and Kadomtsev-Petviashvili-Burgers (KPB) equations are obtained. Furthermore, the solutions of KdVB and KPB equations are presented by using the tangent hyperbolic (tanh) method. The variation in the shock profile with the quantum Bohm potential, collision frequency, and the ratio of drift to shock velocity in the comoving frame, v{sub *}/u, is also investigated. It is found that increasing the positron concentration and collision frequency decreases the strength of the shock. It is also shown that when the localized structure propagates with velocity greater than the diamagnetic drift velocity (i.e., u>v{sub *}), the shock strength decreases. However, the shock strength is observed to increase when the localized structure propagates with velocity less than that of drift velocity (i.e., u<v{sub *}). The relevance of the present investigation with regard to dense astrophysical environments is also pointed out.

Authors:
;  [1]; ;  [2]
  1. TPPD, PINSTECH, P.O. Nilore, 44000 Islamabad (Pakistan)
  2. Department of Physics, GC University, 54000 Lahore (Pakistan)
Publication Date:
OSTI Identifier:
21274244
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 16; Journal Issue: 11; Other Information: DOI: 10.1063/1.3253623; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRONS; HYDRODYNAMIC MODEL; INHOMOGENEOUS PLASMA; ION ACOUSTIC WAVES; IONS; NONLINEAR PROBLEMS; POSITRONS; QUANTUM PLASMA; VELOCITY; WAVE PROPAGATION

Citation Formats

Masood, W, Siddiq, M, Karim, S, and Shah, H A. Coupled nonlinear drift and ion acoustic waves in dense dissipative electron-positron-ion magnetoplasmas. United States: N. p., 2009. Web. doi:10.1063/1.3253623.
Masood, W, Siddiq, M, Karim, S, & Shah, H A. Coupled nonlinear drift and ion acoustic waves in dense dissipative electron-positron-ion magnetoplasmas. United States. https://doi.org/10.1063/1.3253623
Masood, W, Siddiq, M, Karim, S, and Shah, H A. 2009. "Coupled nonlinear drift and ion acoustic waves in dense dissipative electron-positron-ion magnetoplasmas". United States. https://doi.org/10.1063/1.3253623.
@article{osti_21274244,
title = {Coupled nonlinear drift and ion acoustic waves in dense dissipative electron-positron-ion magnetoplasmas},
author = {Masood, W and Siddiq, M and Karim, S and Shah, H A},
abstractNote = {Linear and nonlinear propagation characteristics of drift ion acoustic waves are investigated in an inhomogeneous electron-positron-ion (e-p-i) quantum magnetoplasma with neutrals in the background using the well known quantum hydrodynamic model. In this regard, Korteweg-de Vries-Burgers (KdVB) and Kadomtsev-Petviashvili-Burgers (KPB) equations are obtained. Furthermore, the solutions of KdVB and KPB equations are presented by using the tangent hyperbolic (tanh) method. The variation in the shock profile with the quantum Bohm potential, collision frequency, and the ratio of drift to shock velocity in the comoving frame, v{sub *}/u, is also investigated. It is found that increasing the positron concentration and collision frequency decreases the strength of the shock. It is also shown that when the localized structure propagates with velocity greater than the diamagnetic drift velocity (i.e., u>v{sub *}), the shock strength decreases. However, the shock strength is observed to increase when the localized structure propagates with velocity less than that of drift velocity (i.e., u<v{sub *}). The relevance of the present investigation with regard to dense astrophysical environments is also pointed out.},
doi = {10.1063/1.3253623},
url = {https://www.osti.gov/biblio/21274244}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 16,
place = {United States},
year = {Sun Nov 15 00:00:00 EST 2009},
month = {Sun Nov 15 00:00:00 EST 2009}
}