O(1D) quenching in the ionospheric F-region

Details O(1D) quenching in the ionospheric F-region O(1D) quenching in the ionospheric F-region

Oct 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969p%26ss...17.1725p&link_type=abstract

Planetary and Space Science, Volume 17, Issue 10, p. 1725-1736.

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The collisional quenching rate of O(1D) is determined by comparing observed 6300 Å nightglow intensities with intensities calculated from simultaneously observed F-region electron density profiles. We obtain a quenching frequency which, when extrapolated to the reference height of 120 km, is 20 sec-1, with an accuracy of about a factor of two. The corresponding rate coefficient, assuming N2 is the quencher, is 5-10 × 10-11 cm3 sec-1, depending upon the model atmosphere used. This value agrees well with most of the recent aeronomical and laboratory determinations. It is also shown that all of our observed 6300 Å nightglow can be accounted for by dissociative recombination in the F2-layer. The excess emission found by other workers, which suggested the need for an additional excitation smechanism, was probably contamination. A cooperative project of the Aeronomy Laboratory, Environmental Science Services Administration, Boulder, Colorado, and the Institute Geofísico del Perú, Lima, Perú.

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