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Electrostatic waves potential at the plasma and upper-hybrid resonances

Published online by Cambridge University Press:  13 March 2009

J. Thiel
Affiliation:
Centre National de la Recherche Scientifique, Centre do Rocherche en Physique de 1'Environnemont, 45045 - Orléans Cédex (France)
R. Debrie
Affiliation:
Centre National de la Recherche Scientifique, Centre do Rocherche en Physique de 1'Environnemont, 45045 - Orléans Cédex (France)

Abstract

The potential created by an infinitesimal alternating dipole in a Maxwellian magnetoplasma is computed numerically at the plasma and upper-hybrid resonance frequencies when the latter extends from one to three times the electron cyclotron frequency. A linear full kinetic theory is used for a homogeneous magnetoplasma for which the forced ion motion and the collisions are neglected. The integral which gives the potential is evaluated by using the least-damping- roots (LDR) approximation, i.e. by neglecting the higher-order roots of the dispersion equation for electrostatic waves. Some characteristic potential patterns of dipoles parallel and perpendicular to the magnetic field are computed and comparisons with analytical results previously published are made. The numerical and analytical patterns are similar only at the plasma frequency when the dipole is parallel to the magnetic field.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1981

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