Journal of Plasma Physics

Letter

Diamagnetic drift instabilities in collisional non-uniform quantum dusty magnetoplasmas

M. JAMILa1, CH. UZMAa1, K. ZUBIAa1, I. ZEBAa1, H. M. RAFIQUEa2 and M. SALIMULLAHa3

a1 Department of Physics, GC University, Lahore-54000, Pakistan (jamil.gcu@gmail.com)

a2 Department of Physics, University of the Punjab, Lahore-54000, Pakistan

a3 Department of Physics, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh

Abstract

Dust-acoustic and dust-lower-hybrid diamagnetic drift wave instabilities have been examined in a collisional non-uniform quantum dusty magnetoplasma. The dust-acoustic drift instability arises through the Fermi degenerate pressure of electrons for a high-density plasma, while for a relatively low-density collisional quantum plasma and short wavelength consideration, the instability is dominated by the Bohm potential effect exciting a new quantum dust-acoustic wave. In the long-range wavelength limit, dust-lower-hybrid waves are found to be unstable because of the diamagnetic drift of magnetized ions. Various possible instability conditions are found for diamagnetic drift instability.

(Received December 17 2011)

(Revised March 13 2012)

(Accepted March 20 2012)

(Online publication April 17 2012)