Quenching of the N2 Vegard-Kaplan system in aurora

Details Quenching of the N2 Vegard-Kaplan system in aurora Quenching of the N2 Vegard-Kaplan system in aurora

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81..497v&link_type=abstract

Journal of Geophysical Research, vol. 81, Feb. 1, 1976, p. 497-500.

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Auroral Zones, Gas Spectroscopy, Nitrogen, Spectral Bands, Atmospheric Models, Electron Impact, Emission Spectra, Oxygen, Reaction Kinetics, Rocket Sounding

Scientific paper

The rate coefficient for quenching of the N2 Alpha 3 Sigma state by atomic oxygen and the variation of this coefficient with vibrational quantum number are derived from ground-based spectroscopic measurements of the N2 Vegard-Kaplan system, other recent measurements of the N2 1P system, and theoretical estimates of direct electron-impact excitation to the Alpha 3 Sigma state. For a vibrational quantum number of zero, it is found that a rate coefficient of about 7.5 by 10 to the -11th power cu cm/sec is consistent with reasonable assumptions about atmospheric composition and the auroral luminosity profile. On the basis of observations, it is concluded that this coefficient must double in value for vibrational quantum numbers between 2 and 5 inclusive.

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