Computer Science – Sound
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984georl..11..565c&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 11, June 1984, p. 565-568.
Computer Science
Sound
11
Airglow, Extreme Ultraviolet Radiation, Tropical Regions, Ultraviolet Spectroscopy, Emission Spectra, Oxygen Recombination, Radiative Recombination, Satellite Sounding, Satellite-Borne Instruments
Scientific paper
The first spectrum of the tropical airglow in the 800-1400 A range is presented. The data were obtained at 8 A resolution by the EUV spectrometer on board the STP78-1 satellite. The time-averaged downlooking spectrum within the arc shows strong OI features at 1304 and 1356 A. The oxygen recombination continuum at 911 A, which provides the first conclusive evidence that radiative recombination is the primary excitation mechanism for the tropical ultraviolet emissions, has been detected. Also discovered is a weak OI 989 A emission from the tropical arc region, which is not expected in ordinary radiative recombination spectrum. Such observation indicates that other processes, such as dielectronic recombination or mutual neutralization, might be present in these regions.
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