Double-wells and double-layers in dusty Fermi-Dirac plasmas: Comparison with the semiclassical Thomas-Fermi counterpart

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3527997· OSTI ID:21532138

Akbari-Moghanjoughi, M ^[1]

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1. Department of Physics, Faculty of Sciences, Azarbaijan University of Tarbiat Moallem, 51745-406 Tabriz (Iran, Islamic Republic of)

Based on the quantum hydrodynamics (QHD) model, a new relationship between the electrostatic-potential and the electron-density in the ultradense plasma is derived. Propagation of arbitrary amplitude nonlinear ion waves is, then, investigated in a completely degenerate dense dusty electron-ion plasma, using this new energy relation for the relativistic electrons, in the ground of quantum hydrodynamics model and the results are compared to the case of semiclassical Thomas-Fermi dusty plasma. Based on the standard pseudopotential approach, it is remarked that the Fermi-Dirac plasma, in contrast to the Thomas-Fermi counterpart, accommodates a wide variety of nonlinear excitations such as positive/negative-potential ion solitary and periodic waves, double-layers, and double-wells. It is also remarked that the relativistic degeneracy parameter which relates to the mass-density of plasma has significant effects on the allowed matching-speed range in Fermi-Dirac dusty plasmas.

• OSTI ID: 21532138
• Journal Information: Physics of Plasmas, Vol. 17, Issue 12; Other Information: DOI: 10.1063/1.3527997; (c) 2010 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DUSTS
ELECTRON DENSITY
HYDRODYNAMIC MODEL
ION WAVES
LAYERS
NONLINEAR PROBLEMS
PLASMA DENSITY
PLASMA SIMULATION
RELATIVISTIC PLASMA
THOMAS-FERMI MODEL
ATOMIC MODELS
MATHEMATICAL MODELS
PARTICLE MODELS
PLASMA
PLASMA WAVES
SIMULATION
STATISTICAL MODELS
THERMODYNAMIC MODEL