Physics – Plasma Physics
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3514103m&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 14, CiteID L14103
Physics
Plasma Physics
2
Ionosphere: Active Experiments, Atmospheric Composition And Structure: Airglow And Aurora, Space Plasma Physics: Active Perturbation Experiments, Radio Science: Waves In Plasma (7867)
Scientific paper
Several radio-induced optical emissions were generated during an ionospheric heating experiment performed at the High Power Auroral Stimulation (HIPAS) facility near Two Rivers, Alaska. The O+ 732-733 nm and O(3 D o) 799.0 nm emissions, previously unreported from ionospheric heating experiments, were detected, in addition to the already documented O(3 P) 844.6 nm and O(5 P) 777.4 nm emissions. Maximum emission intensity was observed in the magnetic zenith, when the heater was transmitting continuous wave O-mode, at a frequency of 2.85 MHz. A modified Czerny-Turner grating spectrometer was used to acquire high resolution optical spectra of the induced emissions, which were synchronized to the heater duty cycle. Candidate mechanisms for the production of the radio-induced emissions, which occurred before the ``double resonance'' condition, are presented.
Gustavsson Björn
Hughes Janice M.
Kosch Michael J.
Mutiso C. K.
Pedersen Ted
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