Ion acoustic solitary waves and double layers in dense electron-positron-ion magnetoplasma

The existence of ion acoustic solitary waves is studied in a magnetized dense electron-positron-ion plasma. The ions are described by the hydrodynamic equations, and the electron and positron are assumed to follow the Thomas–Fermi density distribution. The pseudopotential is derived directly from th...

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Bibliographic Details
Published in:Physics of plasmas 2010-01, Vol.17 (1)
Main Authors: Chatterjee, Prasanta, Saha, Taraknath, Muniandy, S. V., Wong, C. S., Roychoudhury, Rajkumar
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
ATOMIC MODELS
CHARGED PARTICLES
DIFFERENTIAL EQUATIONS
ELECTRONS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FLUID MECHANICS
HYDRODYNAMICS
ION ACOUSTIC WAVES
ION TEMPERATURE
ION WAVES
IONS
LEPTONS
MAGNETOHYDRODYNAMICS
MATHEMATICAL MODELS
MATTER
MECHANICS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMA WAVES
POISSON EQUATION
POSITRONS
QUASI PARTICLES
SOLITONS
THOMAS-FERMI MODEL
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Summary:The existence of ion acoustic solitary waves is studied in a magnetized dense electron-positron-ion plasma. The ions are described by the hydrodynamic equations, and the electron and positron are assumed to follow the Thomas–Fermi density distribution. The pseudopotential is derived directly from the basic equations including Poisson’s equation without assuming the quasineutrality condition. The effect of ion temperature on the solitary waves is studied, and the ranges of parameters for which solitary waves and double layers exist are also studied in detail using Sagdeev’s technique.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.3291059