Nearly simultaneous images of HF-pump enhanced airglow at 6300 Å and 5577 Å

Details Nearly simultaneous images of HF-pump enhanced airglow at 6300 Å and 5577 Å Nearly simultaneous images of HF-pump enhanced airglow at 6300 Å and 5577 Å

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29x..73g&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 24, pp. 73-1, CiteID 2220, DOI 10.1029/2002GL015350

Physics

10

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801), Ionosphere: Active Experiments, Radio Science: Ionospheric Physics (2409), Ionosphere: Particle Acceleration, Ionosphere: Ionosphere/Atmosphere Interactions (0335)

Scientific paper

This report presents nearly simultaneous images of HF-pump enhanced airglow at 6300 Å and 5577 Å caused by HF radio wave pumping in the ionosphere from the EISCAT-Heating facility. The images show co-located enhancements implying that there are O(1D) and O(1S) emissions from the ionospheric F region. The maximum enhancement in 6300 Å is 50-60 Rayleighs and the maximum enhancement in 5577 Å is 10-20 Rayleighs for five different HF-pump pulses. The 5577 to 6300 Å intensity ratio of 0.3-0.4 implies that the excitation is caused by a nonthermal electron population.

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