Phys Rev E Stat Nonlin Soft Matter Phys. 2013 Apr;87(4):043107. doi: 10.1103/PhysRevE.87.043107. Epub 2013 Apr 15.

Dust-ion-acoustic supersolitons in dusty plasmas with nonthermal electrons.

Physical review. E, Statistical, nonlinear, and soft matter physics

Frank Verheest, Manfred A Hellberg, Ioannis Kourakis

PMID: 23679530 DOI: 10.1103/PhysRevE.87.043107

Abstract

Supersolitons are a recent addition to the literature on large-amplitude solitary waves in multispecies plasmas. They are distinguished from the usual solitons by their associated electric field profiles which are inherently distinct from traditional bipolar structures. In this paper, dust-ion-acoustic modes in a dusty plasma with stationary negative dust, cold fluid protons, and nonthermal electrons are investigated through a Sagdeev pseudopotential approach to see where supersolitons fit between ranges of ordinary solitons and double layers, as supersolitons always have finite amplitudes. They therefore cannot be described by reductive perturbation treatments, which rely on a weak amplitude assumption. A systematic methodology and discussion is given to distinguish the existence domains in solitary wave speed and amplitude for the different solitons, supersolitons and double layers, in terms of compositional parameters for the plasma model under consideration.

Publication Types

• Journal Article
• Research Support, Non-U.S. Gov't