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Title: Ion-acoustic solitary waves in a relativistic plasma

Abstract

The possibility of an ion-acoustic solitary wave in a relativistic plasma comprised of hot electrons and cold ions is investigated by Sagdeev's pseudopotential method using a set of fully relativistic two-fluid equations. In the nonrelativistic limit, the general relativistic conditions for the existence of solitary waves found in the present study reduces exactly to the well known expressions for the nonrelativistic conditions. It is found by a graphical method that as the flow velocity of the plasma increases, the shape of the solitary wave becomes sharper and more prominent if the flow velocity is larger than the solitary-wave velocity. In the case in which the flow velocity is smaller than the solitary-wave velocity, however, the solitary wave is more pronounced for smaller flow velocity. It is also found that, for a fixed flow velocity, the sharpness and the height of the solitary wave decrease as the temperature increases as in nonrelativistic plasmas. Unlike in nonrelativistic plasmas, the present study predicts the existence of nonmoving soliton-like electrostatic structures.

Authors:
;  [1];  [2]
  1. Department of Physics, Pusan National University, Busan 609-735 (Korea, Republic of)
  2. (Korea, Republic of)
Publication Date:
OSTI Identifier:
20974830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 2; Other Information: DOI: 10.1063/1.2536581; (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; ELECTRON TEMPERATURE; ELECTRONS; HEIGHT; ION ACOUSTIC WAVES; ION TEMPERATURE; IONS; PLASMA FLUID EQUATIONS; RELATIVISTIC PLASMA; RELATIVISTIC RANGE; VELOCITY

Citation Formats

Lee, Nam C., Choi, Cheong Rim, and Department of Astronomy and Space Science, College of Natural Sciences and Institute for Basic Science Research, Chungbuk National University, Cheongju 361-763. Ion-acoustic solitary waves in a relativistic plasma. United States: N. p., 2007. Web. doi:10.1063/1.2536581.
Lee, Nam C., Choi, Cheong Rim, & Department of Astronomy and Space Science, College of Natural Sciences and Institute for Basic Science Research, Chungbuk National University, Cheongju 361-763. Ion-acoustic solitary waves in a relativistic plasma. United States. doi:10.1063/1.2536581.
Lee, Nam C., Choi, Cheong Rim, and Department of Astronomy and Space Science, College of Natural Sciences and Institute for Basic Science Research, Chungbuk National University, Cheongju 361-763. Thu . "Ion-acoustic solitary waves in a relativistic plasma". United States. doi:10.1063/1.2536581.
@article{osti_20974830,
title = {Ion-acoustic solitary waves in a relativistic plasma},
author = {Lee, Nam C. and Choi, Cheong Rim and Department of Astronomy and Space Science, College of Natural Sciences and Institute for Basic Science Research, Chungbuk National University, Cheongju 361-763},
abstractNote = {The possibility of an ion-acoustic solitary wave in a relativistic plasma comprised of hot electrons and cold ions is investigated by Sagdeev's pseudopotential method using a set of fully relativistic two-fluid equations. In the nonrelativistic limit, the general relativistic conditions for the existence of solitary waves found in the present study reduces exactly to the well known expressions for the nonrelativistic conditions. It is found by a graphical method that as the flow velocity of the plasma increases, the shape of the solitary wave becomes sharper and more prominent if the flow velocity is larger than the solitary-wave velocity. In the case in which the flow velocity is smaller than the solitary-wave velocity, however, the solitary wave is more pronounced for smaller flow velocity. It is also found that, for a fixed flow velocity, the sharpness and the height of the solitary wave decrease as the temperature increases as in nonrelativistic plasmas. Unlike in nonrelativistic plasmas, the present study predicts the existence of nonmoving soliton-like electrostatic structures.},
doi = {10.1063/1.2536581},
journal = {Physics of Plasmas},
number = 2,
volume = 14,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}