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Title: Solitary potential in a four-component dusty plasma

Abstract

A four-component dusty plasma consisting of electrons, ions, and negative as well as positive dust particles has been considered. The basic properties of small but finite amplitude solitary potential structures that may exist in such a four-component dusty plasma have been investigated theoretically by the reductive perturbation method. It has been found that the presence of additional positive dust component has significantly modified the basic properties of solitary potential structures in a dusty plasma. The implications of our results in different regions of space (viz., cometary tails, mesosphere, Jupiter's magnetosphere, etc.) are discussed briefly.

Authors:
;  [1]
  1. Department of Physics, Jahangirnagar University, Savar, Dhaka-1342 (Bangladesh)
Publication Date:
OSTI Identifier:
20960130
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 1; Other Information: DOI: 10.1063/1.2408401; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AMPLITUDES; DUSTS; ELECTRONS; IONS; JUPITER PLANET; MESOSPHERE; PARTICLES; PERTURBATION THEORY; PLASMA; POTENTIALS; SOLITONS; SPACE

Citation Formats

Sayed, Fatema, and Mamun, A. A. Solitary potential in a four-component dusty plasma. United States: N. p., 2007. Web. doi:10.1063/1.2408401.
Sayed, Fatema, & Mamun, A. A. Solitary potential in a four-component dusty plasma. United States. doi:10.1063/1.2408401.
Sayed, Fatema, and Mamun, A. A. Mon . "Solitary potential in a four-component dusty plasma". United States. doi:10.1063/1.2408401.
@article{osti_20960130,
title = {Solitary potential in a four-component dusty plasma},
author = {Sayed, Fatema and Mamun, A. A.},
abstractNote = {A four-component dusty plasma consisting of electrons, ions, and negative as well as positive dust particles has been considered. The basic properties of small but finite amplitude solitary potential structures that may exist in such a four-component dusty plasma have been investigated theoretically by the reductive perturbation method. It has been found that the presence of additional positive dust component has significantly modified the basic properties of solitary potential structures in a dusty plasma. The implications of our results in different regions of space (viz., cometary tails, mesosphere, Jupiter's magnetosphere, etc.) are discussed briefly.},
doi = {10.1063/1.2408401},
journal = {Physics of Plasmas},
number = 1,
volume = 14,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}
  • The head-on collision of dust acoustic solitary waves in a four-component unmagnetized dusty plasma with Boltzmann distributed electrons, nonthermal ions, and negatively charged dust grains as well as positively charged dust grains is investigated using the extended Poincare-Lighthill-Kuo method. The effects of the ratio of electron temperature to ion temperature and the ratio of the positively charged dust grains mass to the negatively charged dust grains mass on the phase shift are studied. It is found that the presence of nonthermal ions plays a significant role on the collision of dust acoustic solitary waves. This study would be useful formore » investigations of plasma behavior in different regions of space, viz., cometary tails, upper and lower mesosphere, Jupiter's magnetosphere, etc.« less
  • Theoretical investigation has been made on obliquely propagating dust-acoustic (DA) solitary waves (SWs) in a magnetized dusty plasma which consists of non-inertial adiabatic electron and ion fluids, and inertial negatively as well as positively charged adiabatic dust fluids. The reductive perturbation method has been employed to derive the Korteweg-de Vries equation which admits a solitary wave solution for small but finite amplitude limit. It has been shown that the basic features (speed, height, thickness, etc.) of such DA solitary structures are significantly modified by adiabaticity of plasma fluids, opposite polarity dust components, and the obliqueness of external magnetic field. Themore » SWs have been changed from compressive to rarefactive depending on the value of {mu} (a parameter determining the number of positive dust present in this plasma model). The present investigation can be of relevance to the electrostatic solitary structures observed in various dusty plasma environments (viz. cometary tails, upper mesosphere, Jupiter's magnetosphere, etc.)« less
  • No abstract prepared.
  • Dust acoustic solitary waves are studied in a four-component dusty plasma. Positively and negatively charged mobile dust and Boltzmann-distributed electrons are considered. The ion distribution is taken as nonthermal. The Korteweg-de Vries equation is derived using reductive perturbation technique. We are able to reproduce the results obtained by Sayed and Mamun [Phys. Plasmas 14, 014501 (2007)] provided the Boltzmann distribution is considered for the ions. Higher order inhomogeneous differential equation is obtained for the dressed soliton. By using the renormalization method of Kodama and Taniuti [J. Phys. Soc. Jpn. 45, 298 (1978)], we derived the expression for the dressed soliton.
  • The higher order solutions of dust acoustic wave in dusty plasma consisting of positively charged warm adiabatic dust, negatively charged cold dust, and nonisothermally distributed electrons are studied. The Schamel-KdV equation is derived using reductive perturbation method (RPM). RPM is further extended to include the contributions of higher order terms and a generalized KdV equation is derived to observe the deviation from isothermality. Effects of nonisothermal parameter, mass and charge ratio, ratio of ion to electron temperatures, and ratio of dust to ion temperatures have been thoroughly studied. By using the renormalization method of Kodama and Taniuti [J. Phys. Soc.more » Jpn. 45, 298 (1978)], authors have also discussed characteristics of the dressed solitons.« less