The O I 3d3D(0) - 2p4 3p transition at 1026 A in the day airglow

Details The O I 3d3D(0) - 2p4 3p transition at 1026 A in the day airglow The O I 3d3D(0) - 2p4 3p transition at 1026 A in the day airglow

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.8767m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Aug. 1, 1987, p. 8767-8773.

Physics

17

Airglow, Dayglow, Lyman Beta Radiation, Optical Transition, Oxygen Atoms, Ultraviolet Spectra, Monte Carlo Method, Satellite Observation, Solar Spectra, Wave Scattering

Scientific paper

An emission feature at 1026 Å observed at 600 km in the dayglow with a spectrometer on board the STP 78-1 spacecraft cannot be explained by geocoronal hydrogen Lyman β. An accidental resonance of some lines of the O I multiplet at 1026 Å with the broad solar Lyman β line can in fact account for the observed emission rate, based on analysis with a Monte Carlo radiative transport model. Photoelectron excitation of atomic oxygen is negligible compared with resonant scattering. These airglow results support a ratio of 66 to 1 for the solar Lyman α to Lyman β line center fluxes.

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