Coupling of Electrostatic Waves in a Nongyrotropic Plasma

The dispersion relation for small‐amplitude electrostatic waves in a nongyrotropic plasma is derived. The equilibrium distribution function is not symmetric in the plane perpendicular to the magnetic field and is necessarily periodic in time. A single electrostatic mode contains a linear superpositi...

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Bibliographic Details
Published in:The Physics of fluids (1958) 1970-01, Vol.13 (7), p.1791-1794
Main Author: Eldridge, Owen
Format: Article
Language:English
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Summary:The dispersion relation for small‐amplitude electrostatic waves in a nongyrotropic plasma is derived. The equilibrium distribution function is not symmetric in the plane perpendicular to the magnetic field and is necessarily periodic in time. A single electrostatic mode contains a linear superposition of potentials with the same wavelength and damping rate but with different frequencies separated by the cyclotron frequency. The dispersion relation is solved for the case of small asymmetry. The asymmetry then leads to a linear coupling of known modes, with small changes in known dispersion relations.
ISSN:0031-9171
2163-4998
DOI:10.1063/1.1693156