Large-amplitude electron-acoustic solitons in a dusty plasma with   kappa-distributed electrons
  The Sagdeev pseudopotential method is used to investigate the occurrence and the dynamics of fully nonlinear electrostatic solitary structures in a plasma containing suprathermal hot electrons, in the presence of massive charged dust particles in the background. The soliton existence domain is delineated, and its parametric dependence on different physical parameters is clarified. 
N. S. Saini, A. Danehkar, M. A. Hellberg, I. Kourakis
astro-ph.SR astro-ph.CO physics.plasm-ph