Determination of the auroral O/1S/ production sources from coordinated rocket and satellite measurements

Details Determination of the auroral O/1S/ production sources from coordinated rocket and satellite measurements Determination of the auroral O/1S/ production sources from coordinated rocket and satellite measurements

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.5345s&link_type=abstract

Journal of Geophysical Research, vol. 84, Sept. 1, 1979, p. 5345-5348.

Physics

Atomic Physics

4

Atmospheric Chemistry, Atomic Excitations, Auroral Zones, Oxygen Atoms, Oxygen Spectra, Rocket Sounding, Atmospheric Radiation, Covariance, Ionospheric Electron Density, Oxygen Recombination, Quenching (Atomic Physics), Vertical Distribution

Scientific paper

This paper examines the auroral excitation mechanisms using data collected in a satellite/rocket/aurora coordination. Past theories considered that variation with altitude of the emission from the O(1S) state is the same as that from the N2(+) first negative band system. Actually, the source function for O(1S) does not covary with N2(+) but has a smaller scale height. The covariation is due to quenching of the source function by O(3P). The steadiness of the aurora in a flight of the Michigan Airglow Payload allows the profile to be differentiated for direct comparison with theory. It is concluded that when most of the relevant variables for production of the O(1S) state are simultaneously measured in aurora, the major source functions are dissociative recombination of O2(+) above 210 km to apogee at 250 km, and below 180 km the energy transfer from N2(A3sigma) in the oxygen atom quenching reaction.

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