Auroral recombination of N and O - A possible source for emission in the gamma and delta bands of NO

Details Auroral recombination of N and O - A possible source for emission in the gamma and delta bands of NO Auroral recombination of N and O - A possible source for emission in the gamma and delta bands of NO

Nov 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977p%26ss...25.1021w&link_type=abstract

Planetary and Space Science, vol. 25, Nov. 1977, p. 1021-1026.

Physics

Auroras, Nitric Oxide, Nitrogen Atoms, Oxygen Atoms, Radiative Recombination, Atmospheric Density, Atmospheric Models, Vibrational Spectra

Scientific paper

Radiative recombination of N and O provides a significant source for auroral emission in the gamma and delta bands of NO with selective population of vibrational levels in the A 2 Sigma(+) and C 2 Pi states. This mechanism may account for emissions detected near 2150 A. Models are derived for the auroral ionosphere and include estimates for the concentrations of N and NO. The concentration of NO is estimated to have a value of about 100 million per cu cm near 140 km in an IBC III aurora. The corresponding density for N is about 50 million per cu cm, and the concentration ratio NO(+)/O2(+) has a value of about 5.5.

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