Dusty plasma near a conducting boundary with dust-neutral collisions

Using the usual fluid model the behavior of an unmagnetized dusty plasma ne ar a conducting boundary with dust-neutral collisional effect is studied. T he plasma consists of electrons, ions, negatively charged micron size dust particles, and neutrals. The Sagdeev potential for collisionless case is al so calculated and found that it has different structure for plasmas with an d without dusts. An expression for gradient of potential (i.e., the electri c field) for collisional dusty plasma with dust-neutral collisions is calcu lated. The relation between the dust acoustic velocity and the collisionali ty has been discussed. (C) 2001 American Institute of Physics.