Nonlinear structure of ion-acoustic waves in completely degenerate electron-positron and ion plasma

Journal Article · Thu Jul 15 04:00:00 EDT 2010 · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)

DOI:https://doi.org/10.1103/PHYSREVE.82.016403· OSTI ID:21362187

Rasheed, A; Tsintsadze, N L ^[1]; Murtaza, G ^[2]

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1. Department of Physics, G.C. University, Lahore 54000 (Pakistan)
2. Salam Chair in Physics, G.C. University, Lahore 54000 (Pakistan)

A rigorous theoretical investigation has been made of fully nonlinear ion-acoustic waves in nonrelativistic and ultrarelativistic, collisionless, unmagnetized plasma containing of degenerate electrons and positrons, and classical cold ions. In both (nonrelativistic and ultrarelativistic) regimes the electrons and positrons are assumed to follow the corresponding Fermi distribution while the ions are described by the hydrodynamic equations. An energy balancelike equation involving a Sagdeev-type pseudopotential is derived separately for both the regimes. In addition, stationary periodic and solitary waves are also investigated for the two cases. The present work would be helpful to understand the excitation of nonlinear ion-acoustic waves in a degenerate plasma such as in superdense white dwarfs.

• OSTI ID: 21362187
• Journal Information: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print), Journal Name: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print) Journal Issue: 1 Vol. 82; ISSN 1539-3755
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
CHARGED PARTICLES
DWARF STARS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EXCITATION
FERMIONS
ION ACOUSTIC WAVES
ION WAVES
IONS
LEPTONS
MATTER
NONLINEAR PROBLEMS
PERIODICITY
PLASMA
PLASMA WAVES
POSITRONS
RELATIVISTIC RANGE
STARS
VARIATIONS
WHITE DWARF STARS