The effect of dust charge fluctuations on collisional drift waves in a magnetized plasma cylinder

The nonlinear coupling between collisional drift waves and a lower-hybrid pump wave is studied in a magnetized dusty plasma cylinder. A dispersion relation for the collisional drift wave and growth rate is derived incorporating both pondermotive and Ohmic heating effects. The growth rate and mode frequencies were evaluated based on existing dusty plasma parameters. It is found that the unstable collisional drift mode frequency increases and the growth rate decreases sharply with the relative density of negatively charged dust grains. Moreover, the collisional frequency has no effect on the unstable drift mode frequency. However, the increases in collisional frequency and electron temperature are playing an important role in the damping effect.