Drift wave instability in a nonuniform quantum dusty magnetoplasma

Abstract

Using the quantum hydrodynamic model of plasmas and with quantum effects arising through the Bohm potential and the Fermi degenerate pressure, the possible drift waves and their instabilities have been investigated in considerable detail in a nonuniform dusty magnetoplasma. It is found that in the presence of a nonuniform ambient magnetic field, the drift waves grow in amplitude by taking energy from the streaming ions and density inhomogeneity. The implication of the drift wave instability for nonthermal electrostatic fluctuations to laboratory and astrophysical environments is also pointed out.

Electrostatic drift modes in quantum dusty plasmas with Jeans terms

“…[29][30][31][32][33][34][35][36] Recently, Ali et al 37 derived the dispersion relationship for the electrostatic driftlike waves in a nonuniform collisional quantum magnetoplasma and found that modified driftlike waves are unstable. Salimullah et al 6 investigated possible drift waves and their instabilities in nonuniform quantum dusty plasmas. On the other hand, a collapse results if the internal pressure of the system is too weak to balance the self-gravitational force of a mass density perturbation.…”

Drift Modified Longitudinal Electrokinetic Mode in Colloids Laden Semiconductor Quantum Plasmas

“…Several researchers [3][4][5][6][7][8][9][10] have reported quantum effect in high density and extremely low temperature plasma media, since in these environments the de-Broglie wavelength of the plasma particles become comparable to the Debye length or other scale lengths of the plasma and consequently quantum mechanical effects become important parameter in deciding the behaviour of charged particles.…”

Modulation of drift-wave envelopes in a nonuniform quantum magnetoplasma

“…Thus, a) Electronic mail: apmisra@visva-bharati.ac.in, apmisra@gmail.com there appear the E × B drift (where E is the electric field and B is the magnetic field), diamagnetic drift and polarization drift velocities due to the density and magnetic field inhomogeneities, as well as the quantum drift velocity caused by the strong density correlations due to quantum fluctuations. It naturally becomes a challenge to understand the properties of drift waves as well as the formation of localized structures in degenerate dense plasmas [5][6][7][8][9][10][11] , as the quantum effects begin to modify the physical process at high densities.…”

“…12,13 ] as well as quantum plasmas [See, e.g., Refs. [5][6][7][8][9][10][11] ] which play a crucial role in cross-field plasma particle transports 14,15 , and the formation of coherent structures like solitons in space 16 , laboratory 17,18 as well as degenerate dense plasmas that are magnetized. Note that both the drift-Alfvén waves can be excited by free energy sources that are stored in the equilibrium pressure gradient and in magnetic field inhomogeneity.…”