Ion temperature gradient-driven dipolar vortices in dusty plasmas

摘要

The nonlinear dynamics of the ion temperature gradient (ITG) mode, is investigated in a dusty plasma assuming the dust grains to be tiny and highly charged. The electrostatic drift waves cannot be ignored in the linear dispersion relation if polarization drifts of ions and dust are taken into account. The dipolar vortices are predicted to be formed in the nonlinear regime. The relevance of this study to space and astrophysical plasmas is pointed out.