Surface acoustic waves on a dusty plasma sheet

The propagation of linear and nonlinear surface acoustic waves in a dusty p lasma sheet is considered. Spatial restrictions of a dusty plasma lead to a n increase in the dispersion in the long wavelength limit, to substantial m odifications of the longitudinal modulational instability, and to the possi ble formation of nonlinear Schrodinger type solitons. (C) 2000 American Ins titute of Physics. [S1070- 664X(00)01810-3].