Electrostatic drift waves in nonuniform quantum magnetized plasmas

Abstract

Electrostatic drift waves ͑EDWs͒ in nonuniform quantum magnetized plasmas are described by the quantum hydrodynamic model. Electrons are viewed as a low-temperature Fermi gas. Analytical expression of the dispersion relationship of the quantum EDW is presented. Quantum effects are shown to affect the dispersion of the EDW significantly. The effects on the dispersion relation due to the magnetic field and spatial inhomogeneity give rise to results similar to the classical case. Our results should be relevant to dense astrophysical objects, e.g., neutron stars, magnet-stars, and white dwarfs.

Electrostatic drift modes in quantum pair plasmas

“…͑13͒ can be rewritten as v te , which is the quantum electron-acoustic speed. 62 respectively. We see that the first mode is the electronacoustic wave while the second mode is the Langmuir wave with quantum effect corrections in pair plasmas, in which the plasma frequency p is modified as p 2 =2 e 2 .…”

Parallel and perpendicular velocity sheared flows driven tripolar vortices in an inhomogeneous electron-ion quantum magnetoplasma

“…Shukla and Stenflo 23 found new drift modes in nonuniform quantum magnetoplasmas and observed that the Bohm potential term significantly modified the electron drift wave frequency. Wu et al 24 investigated the electrostatic drift vortices in quantum magnetoplasmas employing the QHD model and found that the waves got modified significantly by the quantum corrections. Masood et al 25 investigated quantum ion acoustic vortices in an inhomogeneous plasma and found that electrostatic monopolar, dipolar, and vortex street type solutions could appear in such a plasma.…”

Coupled nonlinear drift and ion acoustic waves in dense dissipative electron-positron-ion magnetoplasmas

“…Shukla and Stenflo 12 found new drift modes in nonuniform quantum magnetoplasmas and observed that the Bohm potential term significantly modified the electron drift wave frequency. Wu et al 13 studied the electrostatic drift vortices in quantum magnetoplasmas employing the QHD model and found that the waves got modified significantly by the quantum corrections. Masood et al 14 investigated quantum ion acoustic vortices in an inhomogeneous plasma and found that electrostatic monopolar, dipolar, and vortex street type solutions could appear in such a plasma.…”