Ion-acoustic compressive and rarefactive solitons in a warm multicomponent plasma with negative ions

Journal Article · Sun Dec 01 04:00:00 EST 1996 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.872063· OSTI ID:398529

Mishra, M K; Chhabra, R S ^[1]

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1. Department of Physics, University of Rajasthan, Jaipur-302004 (India)

Propagation of ion-acoustic solitons in a plasma consisting of warm positive and negative ion species with different masses, concentrations, and charge states, along with hot electrons, is studied. It is found that the finite temperatures of two ion species give rise to two types of modes, i.e., a slow ion-acoustic mode and a fast ion-acoustic mode. For all values of negative ion concentration, the slow wave mode supports compressive (rarefactive) solitons, when the negative ion species has a higher (lower) temperature than the positive ion species. The fast wave mode supports compressive solitons for low concentration of negative ions. At the critical concentration of negative ions both compressive and rarefactive modified Korteweg{endash}de Vries solitons coexist. Above this critical concentration the system supports rarefactive solitons. The dependence of the critical concentration on the temperatures of two ion species is also discussed. {copyright} {ital 1996 American Institute of Physics.}

• OSTI ID: 398529
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 3; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CONCENTRATION RATIO
HOT PLASMA
ION ACOUSTIC WAVES
KORTEWEG-DE VRIES EQUATION
MULTICOMPONENT PLASMA
SOLITONS