Nonlinear generation of electromagnetic waves in a magnetoplasma

Details Nonlinear generation of electromagnetic waves in a magnetoplasma Nonlinear generation of electromagnetic waves in a magnetoplasma

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jplph..31..423m&link_type=abstract

Journal of Plasma Physics (ISSN 0022-3778), vol. 31, June 1984, p. 423-436.

Physics

Plasma Physics

59

Atmospheric Radiation, Electrostatic Waves, Magnetohydrodynamic Stability, Magnetospheric Instability, Plasma-Electromagnetic Interaction, Space Plasmas, Ion Cyclotron Radiation, Nonlinear Equations, Self Consistent Fields, Wave Equations, Wave Generation, Wave Scattering

Scientific paper

A three-wave decay-interaction model explaining the enhanced narrow-band radiation observed in the earth magnetosphere is proposed. It is demonstrated theoretically that an upper-hybrid wave of finite amplitude can decay to produce an electrostatic lower-hybrid ion-cyclotron wave propagating perpendicular to the external magnetic field and either a left-hand-circular-polarization electromagnetic wave propagating along the field or ordinary-mode radiation propagating across the field. The nonlinear dispersion relations are derived, growth rates are calculated, and numerical results demonstrating the applicability of the mechanism to the magnetosphere are included.

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