Physics
Scientific paper
Apr 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20..735g&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 8, p. 735-738.
Physics
23
Electric Field Strength, Electromagnetic Radiation, Electron Pumping, Stimulated Emission, Wave-Particle Interactions, Decay, Earth Ionosphere, Kinematics, Mathematical Models, Plasma Pumping, Wave Propagation
Scientific paper
We study the combined process of a three-wave parametric decay of an oscillating electric pump field into an electron Bernstein and a lower hybrid wave, and a conversion of the pump wave off slowly growing field aligned irregularities into an upper hybrid wave which merges with the lower hybrid wave. It is found that slowly growing, upshifted stimulated electromagnetic emissions, observed experimentally for pump frequencies slightly above electron cyclotron harmonics, are well explained within this model. In the radiation spectrum there is a lower cutoff frequency which increases linearly with the cyclotron harmonic.
Erukhimov Lev
Goodman Simon
Thidé Bo
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