N(2D) + O2 - A source of thermospheric 6300-A emission?

Details N(2D) + O2 - A source of thermospheric 6300-A emission? N(2D) + O2 - A source of thermospheric 6300-A emission?

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992p%26ss...40..699l&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 40, no. 5, May 1992, p. 699-705.

Physics

7

Aeronomy, Airglow, Auroral Zones, Nitrogen Atoms, Oxygen Atoms, Thermosphere, Cryogenic Temperature, Dayglow, Electron Impact, Polar Caps

Scientific paper

The aeronomic and laboratory evidence concerning the efficiency of the reaction N(2D) + O2 - NO(v) + O(1D) in producing thermospheric 6300-A emission is reviewed. Dayglow and nightside auroral measurements do not offer unambiguous evidence concerning the need for an additional source. Measurements of the temporal variation and lifetime of the 6300 and 5200-A emissions in the polar cap and cleft aurora are not consistent with the proposed mechanism. Through consideration of reaction dynamics, it is concluded that the laboratory inference of a large O(1D) yield at cryogenic temperatures is not in conflict with reports of a low O(1D) yield at thermospheric temperatures.

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