Interlaced linear-nonlinear wave propagation in a warm multicomponent plasma

Linear and nonlinear propagations of arbitrary amplitude nonlinear structures, viz. solitons, double layers, and supersolitons are investigated in multicomponent plasma consisting of warm ions, two temperature nonthermal electrons and hot nonthermal positrons. The Sagdeev pseudopotential approach is...

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Bibliographic Details
Published in:Physics of plasmas 2014-12, Vol.21 (12)
Main Authors: Dutta, Debjit, Singha, Prasenjit, Sahu, Biswajit
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
ELECTRONS
Integral equations
IONS
NONLINEAR PROBLEMS
Parameters
PLASMA
Plasma physics
POSITRONS
Solitary waves
SOLITONS
Supports
WAVE PROPAGATION
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Summary:Linear and nonlinear propagations of arbitrary amplitude nonlinear structures, viz. solitons, double layers, and supersolitons are investigated in multicomponent plasma consisting of warm ions, two temperature nonthermal electrons and hot nonthermal positrons. The Sagdeev pseudopotential approach is employed to obtain the energy integral equation in such a multicomponent plasma using fluid theory. The effects of several plasma parameters on the ion acoustic solitons, double layers, and supersolitons are analyzed. It is found that the present system supports the coexistence of arbitrary amplitude positive and negative potential solitons in a certain region of parameter space in addition to compressive and rarefactive double layers. Furthermore, numerical calculations reveal that these structures may exist either in supersonic or subsonic regimes. Also, the present plasma system supports supersolitonic structure in supersonic regime.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4904380