Ion-acoustic vortices in a nonuniform, dissipative quantum magnetoplasma with sheared ion flows
- Theoretical Plasma Physics Division, P.O. Nilore, 54000 Islamabad (Pakistan)
- Department of Mathematics, Quaid-i-Azam University, 45320 Islamabad (Pakistan)
By employing the quantum hydrodynamic model, linear and nonlinear properties of quantum ion-acoustic waves are studied in a nonuniform, dissipative quantum plasma with sheared ion flow parallel to the ambient magnetic field. It is shown that the shear flow parallel to the magnetic field can drive the quantum ion-acoustic wave unstable. Stationary solutions of the nonlinear equations that govern the quantum ion-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 the quantum statistical and Bohm potential terms significantly modify the scalelengths of these structures. The present work may have relevance in the dense astrophysical environments where quantum effects are expected to play a significant role.
- OSTI ID:
- 21259707
- Journal Information:
- Physics of Plasmas, Vol. 15, Issue 12; Other Information: DOI: 10.1063/1.3036931; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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