Arbitrary amplitude solitary and shock waves in an unmagnetized quantum dusty electron-positron-ion plasma

Journal Article · Thu Aug 15 04:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4817817· OSTI ID:22227890

Rouhani, M. R.; Akbarian, A.; Mohammadi, Z. ^[1]

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1. Department of Physics, Alzahra University, P. O. Box 1993891176, Tehran (Iran, Islamic Republic of)

The behavior of quantum dust ion acoustic soliton and shocks in a plasma including inertialess quantum electrons and positrons, classical cold ions, and stationary negative dust grains are studied, using arbitrary amplitude approach. The effect of dissipation due to viscosity of ions is taken into account. The numerical analysis of Sagdeev potential for small value of quantum diffraction parameter (H) shows that for chosen plasma, only compressive solitons can exist and the existence domain of this type of solitons is decreased by increasing dust density (d). Additionally, the possibility of propagation of both subsonic and supersonic compressive solitons is investigated. It is shown that there is a critical dust density above which only supersonic solitons are observed. Moreover, increasing d leads to a reduction in the existence domain of compressive solitons and the possibility of propagation of rarefactive soliton is provided. So, rarefactive solitons are observed only due to the presence of dust particles in this model quantum plasma. Furthermore, numerical solution of governed equations for arbitrary amplitude shock waves has been investigated. It is shown that only compressive large amplitude shocks can propagate. Finally, the effects of plasma parameters on these structures are investigated. This research will be helpful in understanding the properties of dense astrophysical (i.e., white dwarfs and neutron stars) and laboratory dusty plasmas.

• OSTI ID: 22227890
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 20; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ASTROPHYSICS
DUSTS
ELECTRONS
ION ACOUSTIC WAVES
IONS
NEUTRON STARS
NUMERICAL ANALYSIS
PLASMA DENSITY
PLASMA POTENTIAL
POSITRONS
QUANTUM PLASMA
SHOCK WAVES
SOLITONS
VISCOSITY
WHITE DWARF STARS