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Author Tiwari, Sanat Kumar ♦ Sen, Abhijit
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ CHARGED PARTICLES ♦ EXCITATION ♦ FLOW MODELS ♦ ION ACOUSTIC WAVES ♦ MATHEMATICAL SOLUTIONS ♦ NONLINEAR PROBLEMS ♦ PLASMA ♦ PRECURSOR ♦ SOLITONS ♦ VELOCITY
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 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.
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-02-15
Publisher Place United States
Journal Physics of Plasmas
Volume Number 23
Issue Number 2


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