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

Journal Article · Mon Feb 15 00:00:00 EST 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4941092· OSTI ID:22493879

Sen, Abhijit ^[1]

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1. Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

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.

• OSTI ID: 22493879
• Journal Information: Physics of Plasmas, Vol. 23, Issue 2; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHARGED PARTICLES
EXCITATION
FLOW MODELS
ION ACOUSTIC WAVES
MATHEMATICAL SOLUTIONS
NONLINEAR PROBLEMS
PLASMA
PRECURSOR
SOLITONS
VELOCITY