Vibrational population distribution in the hydroxyl night airglow

Details Vibrational population distribution in the hydroxyl night airglow Vibrational population distribution in the hydroxyl night airglow

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983cajph..61..244t&link_type=abstract

Canadian Journal of Physics, vol. 61, Feb. 1983, p. 244-250. Research supported by the Natural Sciences and Engineering Researc

Physics

34

Atmospheric Chemistry, Electron Distribution, Hydroxyl Radicals, Infrared Spectra, Nightglow, Vibrational Spectra, Hydrogen Atoms, Ozone, Spectrum Analysis, Water Vapor

Scientific paper

Relative populations of the vibrational levels v = 2 to v = 9 (except v = 5) of the hydroxyl radical have been determined from observations of the delta v = 2 and 3 sequences of the vibration-rotation bands in the infrared night airglow spectrum using a Fourier transform spectrometer. The observed line intensities were corrected for water vapour absorption using a new technique. The results indicate a population of the upper vibrational levels which is as much as a factor of two lower than that found in other studies. The observed distribution is not consistent with the atomic hydrogen ozone reaction being the sole excitation mechanism in the night airglow unless the quenching and other rates used in our model are in error.

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