Hall instabilities in dusty plasmas

A unified treatment is presented of Hall instabilities in collisional dusty plasmas, using fluid equations for all charged components. Two modes are generally possible: one with frequencies in the ion-acoustic range (the Farley-Buneman mode), and the other with frequencies in the dust-acoustic range. The real and imaginary parts of the mode frequencies are obtained as functions of the electric field, E-0, perpendicular to the magnetic field, B, permeating the plasma. Calculations are performed for laboratory-type plasmas, and for ionospheric-type plasmas. (C) 2003 Elsevier Science Ltd. All rights reserved.