Modeling of the O I 989-A to 1173-A ratio in the terrestrial dayglow

Details Modeling of the O I 989-A to 1173-A ratio in the terrestrial dayglow Modeling of the O I 989-A to 1173-A ratio in the terrestrial dayglow

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....9212445g&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Nov. 1, 1987, p. 12445-12450. NATO-supported research.

Physics

20

Dayglow, Electron Impact, Midlatitude Atmosphere, Oxygen, Rocket Flight, Atmospheric Models, Optical Thickness, Photoelectrons, Radiative Transfer

Scientific paper

The O I 989-Å and 1173-Å intensities in the mid-latitude dayglow are modeled for the conditions of a January 17, 1985, rocket flight. It is found that the branching ratio required to fit the 1173-Å data is in agreement with the laboratory measurement of 1.3 - 1.5×10-4. The results also suggest that the electron impact excitation cross section for the 3s' 3D0 state in current use may be too large by a factor of ≡2 - 3, in agreement with the most recent laboratory results. If this is indeed the case, then the 1173-Å triplet is by far the most important branch for the 989-Å multiplet.

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