The concentration of atomic oxygen in the auroral lower thermosphere

Details The concentration of atomic oxygen in the auroral lower thermosphere The concentration of atomic oxygen in the auroral lower thermosphere

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979georl...6..860t&link_type=abstract

Geophysical Research Letters, vol. 6, Nov. 1979, p. 860-862.

Physics

2

Atmospheric Composition, Auroral Zones, Oxygen Atoms, Thermosphere, Emission Spectra, Gas Density, Oxygen Spectra, Vertical Distribution

Scientific paper

A method is described to determine the concentration of atomic oxygen in the altitude range 100 to 160 km in an aurora from the ratio of the volume emission rates of the O(1S) 5577 A to N2(+) in 3914 A emissions. Applying the technique to previously published measurements it is found that the O density at 100 km is typically about 1 x 10 to the 11th per cu cm. The occurrence of densities in excess of 2 x 10 to the 11th per cu cm in the aurora at 100 km is rare.

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