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arXiv · 1511.04182

Wakes and precursor soliton excitations by a moving charged object in a plasma

Sanat Kumar Tiwari·Abhijit Sen
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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.

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Sanat Kumar Tiwari, Abhijit Sen. 2015-11-13. Wakes and precursor soliton excitations by a moving charged object in a plasma. https://arxiv.org/abs/1511.04182

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