ALFVEN SURFACE-WAVES IN A MAGNETIZED DUSTY PLASMA

Surface wave propagation in a dusty magnetized plasma at frequencies b elow and of the order of the ion-cyclotron frequency, but well above t he dust cyclotron frequency, is considered. The dust grains are assume d to be stationary, but to carry a proportion of the negative charge o f the plasma. The dispersion relation for surface waves propagating on an interface between a dusty plasma and a vacuum is derived and discu ssed. The damping of the waves due to Alfven resonance absorption in a narrow but non-zero width interface is derived. (C) 1996 American Ins titute of Physics.