Propagation of threedimensional electronacoustic solitary waves
Abstract
Theoretical investigation is carried out for understanding the properties of threedimensional electronacoustic waves propagating in magnetized plasma whose constituents are cold magnetized electron fluid, hot electrons obeying nonthermal distribution, and stationary ions. For this purpose, the hydrodynamic equations for the cold magnetized electron fluid, nonthermal electron density distribution, and the Poisson equation are used to derive the corresponding nonlinear evolution equation, ZkharovKuznetsov (ZK) equation, in the small but finite amplitude regime. The ZK equation is solved analytically and it is found that it supports both solitary and blowup solutions. It is found that rarefactive electronacoustic solitary waves strongly depend on the density and temperature ratios of the hottocold electron species as well as the nonthermal electron parameter. Furthermore, there is a critical value for the nonthermal electron parameter, which decides whether the electronacoustic solitary wave's amplitude is decreased or increased by changing various plasma parameters. Importantly, the change of the propagation angles leads to miss the balance between the nonlinearity and dispersion; hence, the localized pulses convert to explosive/blowup pulses. The relevance of this study to the nonlinear electronacoustic structures in the dayside auroral zone in the light of Viking satellite observations is discussed.
 Authors:

 Faculty of Science, Department of Physics, Ain Shams University, Cairo (Egypt)
 Theoretical Physics Group, Faculty of Science, Department of Physics, Mansoura University, Damietta Branch, New Damietta 34517 (Egypt)
 Publication Date:
 OSTI Identifier:
 21546949
 Resource Type:
 Journal Article
 Journal Name:
 Physics of Plasmas
 Additional Journal Information:
 Journal Volume: 18; Journal Issue: 6; Other Information: DOI: 10.1063/1.3598185; (c) 2011 American Institute of Physics; Journal ID: ISSN 1070664X
 Country of Publication:
 United States
 Language:
 English
 Subject:
 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRON DENSITY; ELECTRON PLASMA WAVES; ELECTRON TEMPERATURE; ION TEMPERATURE; MAGNETOHYDRODYNAMICS; NONLINEAR PROBLEMS; POISSON EQUATION; SOLITONS; THREEDIMENSIONAL CALCULATIONS; WAVE PROPAGATION; DIFFERENTIAL EQUATIONS; EQUATIONS; FLUID MECHANICS; HYDRODYNAMICS; MECHANICS; PARTIAL DIFFERENTIAL EQUATIONS; PLASMA WAVES; QUASI PARTICLES
Citation Formats
Shalaby, M, ElSherif, L S, ElLabany, S K, Sabry, R, and Physics Department, College of Science and Humanitarian Studies, Alkharj University, Alkharj. Propagation of threedimensional electronacoustic solitary waves. United States: N. p., 2011.
Web. doi:10.1063/1.3598185.
Shalaby, M, ElSherif, L S, ElLabany, S K, Sabry, R, & Physics Department, College of Science and Humanitarian Studies, Alkharj University, Alkharj. Propagation of threedimensional electronacoustic solitary waves. United States. doi:10.1063/1.3598185.
Shalaby, M, ElSherif, L S, ElLabany, S K, Sabry, R, and Physics Department, College of Science and Humanitarian Studies, Alkharj University, Alkharj. Wed .
"Propagation of threedimensional electronacoustic solitary waves". United States. doi:10.1063/1.3598185.
@article{osti_21546949,
title = {Propagation of threedimensional electronacoustic solitary waves},
author = {Shalaby, M and ElSherif, L S and ElLabany, S K and Sabry, R and Physics Department, College of Science and Humanitarian Studies, Alkharj University, Alkharj},
abstractNote = {Theoretical investigation is carried out for understanding the properties of threedimensional electronacoustic waves propagating in magnetized plasma whose constituents are cold magnetized electron fluid, hot electrons obeying nonthermal distribution, and stationary ions. For this purpose, the hydrodynamic equations for the cold magnetized electron fluid, nonthermal electron density distribution, and the Poisson equation are used to derive the corresponding nonlinear evolution equation, ZkharovKuznetsov (ZK) equation, in the small but finite amplitude regime. The ZK equation is solved analytically and it is found that it supports both solitary and blowup solutions. It is found that rarefactive electronacoustic solitary waves strongly depend on the density and temperature ratios of the hottocold electron species as well as the nonthermal electron parameter. Furthermore, there is a critical value for the nonthermal electron parameter, which decides whether the electronacoustic solitary wave's amplitude is decreased or increased by changing various plasma parameters. Importantly, the change of the propagation angles leads to miss the balance between the nonlinearity and dispersion; hence, the localized pulses convert to explosive/blowup pulses. The relevance of this study to the nonlinear electronacoustic structures in the dayside auroral zone in the light of Viking satellite observations is discussed.},
doi = {10.1063/1.3598185},
journal = {Physics of Plasmas},
issn = {1070664X},
number = 6,
volume = 18,
place = {United States},
year = {2011},
month = {6}
}