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Weak nonlinear electromagnetic waves and low-frequency magnetic-field generation in electron-positron-ion plasmas

Published online by Cambridge University Press:  13 March 2009

F. B. Rizzato
F. B. Rizzato
Affiliation:
Instituto de Física, Universidade Federal do Rio Grande do Sul, 90049 Porto Alegre, RS, Brasil
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Abstract

The weakly nonlinear localization of obliquely modulated high-frequency electromagnetic waves in an electron-positron-ion plasma is considered. It is shown that the amplitude of the wave turns out to be a strongly dependent function of the angle between the slow modulations and the fast spatial variations and that the possibility appears of spontaneous generation of low-frequency magnetic fields. These magnetic fields are also functions of this angle and of the high-frequency wave polarization. The analysis of colinear modulation in electron-positron plasmas shows that some restriction must be made regarding the validity of previous calculations.

Type
Research Article
Information
Journal of Plasma Physics , Volume 40 , Issue 2 , October 1988 , pp. 289 - 298
Copyright
Copyright © Cambridge University Press 1988

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