期刊
PHYSICS OF PLASMAS
卷 23, 期 2, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4941092
关键词
-
资金
- [FA2386-13-1-4077 AOARD 134077]
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 go beyond the usual weak nonlinearity approximation and show 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. (C) 2016 AIP Publishing LLC.
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