Nonlinear ion modes in a dense plasma with strongly coupled ions and degenerate electron fluids

Journal Article · Mon Aug 15 00:00:00 EDT 2011 · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)

DOI:https://doi.org/10.1103/PHYSREVE.84.026405· OSTI ID:21611555

Shukla, P K; Mamun, A A; Mendis, D A ^[1]

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1. Department of Physics and Astronomy, International Center for Advanced Studies in Physical Sciences, Ruhr-University Bochum, D-44780 Bochum (Germany)

The properties of solitary and shock structures associated with nonlinear ion modes in a dense plasma with strongly coupled nondegenerate ions and degenerate electron fluids are presented. For this purpose, we have used the viscoelastic fluid model for the ions, the inertialess electron momentum equation with weakly and ultrarelativistic pressure laws for the degenerate electron fluids, and Poisson's equation to derive the Burgers and Kortweg-de Vries equations. Possible stationary solutions of the latter are the shock and solitary structures, respectively. It is found that the speed, amplitude, and width of the shock and solitary waves critically depend on the strong coupling between ions and electron degeneracy effects. The relevance of our investigation to the role of localized excitations in dense astrophysical objects is briefly discussed.

• OSTI ID: 21611555
• Journal Information: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print), Vol. 84, Issue 2; Other Information: DOI: 10.1103/PhysRevE.84.026405; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1539-3755
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
97 MATHEMATICAL METHODS AND COMPUTING
AMPLITUDES
ASTROPHYSICS
ELECTRONS
EXCITATION
IONS
MATHEMATICAL SOLUTIONS
NONLINEAR PROBLEMS
PLASMA
POISSON EQUATION
QUANTUM FLUIDS
RELATIVISTIC RANGE
CHARGED PARTICLES
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EQUATIONS
FERMIONS
FLUIDS
LEPTONS
PARTIAL DIFFERENTIAL EQUATIONS
PHYSICS