ETON 4 - An experimental investigation of the altitude dependence of the O2(A3Sigma + u) vibrational populations in the nightglow

Details ETON 4 - An experimental investigation of the altitude dependence of the O2(A3Sigma + u) vibrational populations in the nightglow ETON 4 - An experimental investigation of the altitude dependence of the O2(A3Sigma + u) vibrational populations in the nightglow

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986p%26ss...34..811m&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 34, Sept. 1986, p. 811-817. Research supported by Stockholms Universitet, SER

Physics

Atomic Physics

34

Atmospheric Chemistry, Molecular Energy Levels, Nightglow, Oxygen Spectra, Vibrational Spectra, Quenching (Atomic Physics), Reaction Kinetics, Recombination Reactions, Thermosphere, Vertical Distribution

Scientific paper

Two sets of volume emission profiles of the radiation from higher and lower vibrational states of the O2(A3Sigma + u) molecule in the Herzberg I bands are presented. These measurements do not confirm the predictions of an earlier model that the peak emission from the higher vibrational levels should occur at the higher altitude. In fact, one set of profiles indicates the reverse. Possible explanations are discussed. A kinetic analysis of profiles shows appreciable electronic quenching of O2(A3Sigma + u) in the lower thermosphere by molecular species. The required minimum production efficiency is some 3 percent of the total O-atom recombinations in agreement with previous results.

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