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Nonlinear plasma waves with steady-state d.c. current

Published online by Cambridge University Press:  13 March 2009

S. Rauf
Affiliation:
Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin 53706, U.S.A.
J. A. Tataronis
Affiliation:
Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin 53706, U.S.A.

Extract

Using a low-frequency, low-β model of a magnetized plasma, several nonlinear waves are studied. All the waves share the property that they have a self- consistent time-averaged current in the steady state. The first wave is a one- dimensional solitary wave that propagates obliquely to a static magnetic field. The wave magnetic field has a kink structure, which results in the production of the time-averaged current. A two-dimensional wave that propagates parallel to the background magnetic field is also discussed. This is a forced wave, requiring an antenna structure to support it in the steady state. The characteristics of the two-dimensional wave are dependent upon the wave speed, which in turn is determined by the speed of the travelling wave on the external antenna.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1994

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