Dromion in space and laboratory dusty plasma

In this work, the nonlinear evolution of dust acoustic wave in magnetized dust-ion plasma was investigated. The two component dusty plasma considered is valid as long as n_e0 <;<; Z_dnd₀. We adopted reductive perturbation technique (RPT) to study the nonlinear evolution of these DAWs in two dimensions. It is shown that the governing equation for the two fluid systems is governed by the Davey-Stewartson I equation (DS) and may admit dromion solution . These solutions were illustrated for different cases (viz., Saturn´s F ring, the tail of Halley´s comet and laboratory). The amplitude and width of each dromion were also given.