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Nonlinear low-frequency structures in an electron–positron–ion plasma

Published online by Cambridge University Press:  20 March 2012

S. MOOLLA ,
I. J. LAZARUS  and
R. BHARUTHRAM
S. MOOLLA
Affiliation:
School of Chemistry and Physics, University of KwaZulu-Natal, Durban, 4000, South Africa ([email protected])
I. J. LAZARUS
Affiliation:
Department of Mathematics, Statistics and Physics, Durban University of Technology, Durban, 4000, South Africa
R. BHARUTHRAM
Affiliation:
Office of the Deputy Vice Chancellor, University of the Western Cape, Modderdam Road, Belville, 7535, South Africa
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Abstract

Nonlinear ion cyclotron and ion-acoustic waves have been studied in an electron–positron–ion plasma. Using Boltzmann distributions for the electrons and positrons and fluid equations for the ions, a set of nonlinear equations in the rest frame of the propagating wave is derived and numerically solved for the electric field. A scan of parameter space reveals a range of solutions for the parallel electric field, from sinusoidal to sawtooth to highly spiky waveforms. The results are compared with satellite observations.

Type
Papers
Information
Journal of Plasma Physics , Volume 78 , Issue 5 , October 2012 , pp. 545 - 551
Copyright
Copyright © Cambridge University Press 2012

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