Dust acoustic vortices in an inhomogeneous quantum magnetoplasma with dissipation and sheared dust flows

Journal Article · Wed Oct 15 04:00:00 EDT 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2998831· OSTI ID:21254570

Masood, W; Mirza, Arshad M ^[1]; Nargis, Shahida ^[2]

---

1. Theoretical Plasma Physics Division, P. O. Nilore, Islamabad (Pakistan)
2. Department of Mathematics, Quaid-i-Azam University, Islamabad (Pakistan)

Linear and nonlinear properties of quantum dust acoustic waves are studied in a nonuniform, dissipative quantum plasma with sheared dust flow parallel to the ambient magnetic field, using the quantum hydrodynamic model. It is shown that the shear dust flow parallel to the external magnetic field can drive the quantum dust-acoustic wave unstable provided it has a negative slope. Stationary solutions of the nonlinear equations that govern the quantum dust-acoustic waves are also obtained. It is found that electrostatic monopolar, dipolar, and vortex street-type solutions can appear in such a plasma. It is observed that the inclusion of dust, quantum statistical, and Bohm potential terms significantly modify the scale lengths of these nonlinear structures. The relevance of the present investigation with regard to the dense astrophysical environments is also pointed out.

• OSTI ID: 21254570
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 10 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DUSTS
HYDRODYNAMIC MODEL
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
NONLINEAR PROBLEMS
PLASMA WAVES
QUANTUM PLASMA
SHEAR
SOUND WAVES
VORTICES