Destruction of N/2D/ by O2 - A major source of 6300 A dayglow emission

Details Destruction of N/2D/ by O2 - A major source of 6300 A dayglow emission Destruction of N/2D/ by O2 - A major source of 6300 A dayglow emission

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..410t&link_type=abstract

Geophysical Research Letters, vol. 7, May 1980, p. 410-412.

Physics

Atomic Physics

Atmospheric Chemistry, Auroral Spectroscopy, Dayglow, Molecular Interactions, Nitrogen, Oxygen Spectra, Annual Variations, Nitric Oxide, Oxygen Atoms, Quenching (Atomic Physics), Reaction Kinetics, Thermosphere

Scientific paper

The paper discusses the N(2D) + O2 yields NO + O(1D), for k1 reaction, and examines under different geophysical conditions, the effect of this source of 6300 A surface brightness on the dayglow redline. In calculating the 6300 A volume emission rate, a computer code is used which provides the thermal electron density, photoelectron flux, ion concentrations, electron and ion temperatures and odd nitrogen densities required to evaluate the O(1D) sources and sinks. It is found that under most conditions this source is the dominant mechanism responsible for the production of the 6300 A dayglow above 150 km. The volume emission rate of this source in summer is 2.5 times larger than the sum of all other sources at 180 km, and 1.5 times as large in winter. In addition, when the N(2D) source of O(1D) is taken into account, the rate coefficient for quenching of O(1D) by N2 is estimated to be 4 plus or minus 1 x 10 to the -11th cu cm per sec.

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