Wakes and precursor soliton excitations by a moving charged object in a plasma
Plasma Physics
2015-11-16 v1
Abstract
We study the evolution of nonlinear ion acoustic wave excitations due to a moving charged source in a plasma. Our numerical investigations of the full set of cold fluid equations goes beyond the usual weak nonlinearity approximation and shows the existence of a rich variety of solutions including wakes, precursor solitons and pinned solitons that travel with the source velocity. These solutions represent a large amplitude generalization of solutions obtained in the past for the forced Korteweg deVries equation and can find useful applications in a variety of situations in the laboratory and in space wherever there is a large relative velocity between the plasma and a charged object.
Keywords
Cite
@article{arxiv.1511.04182,
title = {Wakes and precursor soliton excitations by a moving charged object in a plasma},
author = {Sanat Kumar Tiwari and Abhijit Sen},
journal= {arXiv preprint arXiv:1511.04182},
year = {2015}
}