Physics
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....8710479g&link_type=abstract
Journal of Geophysical Research, vol. 87, Dec. 1, 1982, p. 10479-10486.
Physics
22
Auroral Zones, Energetic Particles, Explorer 12 Satellite, Ion Distribution, Plasma Waves, Electric Fields, Harmonics, Ion Cyclotron Radiation, Satellite Observation, Spectrum Analysis
Scientific paper
Several low-altitude auroral wave observations exhibiting ion harmonic frequency structure have been reported. Recent S3-3 wave and particle data are presented that illustrate examples of ion harmonic structure in auroral hiss and the associated energetic ion distributions. Such harmonic features have previously been attributed to either hot ion absorption or emission processes. The observed ion conic distributions are modeled to evaluate their effect on auroral hiss near the lower hybrid resonance frequency where harmonic features are seen. The calculations indicate that resonant ion damping of auroral hiss can indeed account for this distinct class of observed harmonic feature. The concomitant heating of the ion tail, however, appears insufficient to significantly energize the ion distribution.
Church S. R.
Gorney David J.
Mizera P. F.
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