Electron-drift driven ion-acoustic mode in a dusty plasma with   collisional effects
  Instabilities of ion-acoustic waves in a dusty plasma with electron-drift, collisional, and dust charge fluctuations effects, have been investigated. The regimes are clearly marked out where the theory is applicable. The critical electron-drift velocity required to drive the instability is predicted. It is also shown that electron thermal conductivity and charged grains concentration enhance the growth of the ion-acoustic mode whereas ion-viscosity, ion-thermal conductivity, and dust charge fluctuations have a stabilizing effect. 
R. Singh (Institute for Plasma Research, Gandhinagar) and M. P. Bora   (Physics Department, Gauhati University, Guwahati)