Is spread-F related to vibrational excited nitrogen

Details Is spread-F related to vibrational excited nitrogen Is spread-F related to vibrational excited nitrogen

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jatp...43.1249c&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 43, Dec. 1981, p. 1249-1251.

Physics

Atmospheric Chemistry, Ionospheric Ion Density, Molecular Oscillations, Nitrogen, Spread F, Equatorial Atmosphere, Oxygen, Reaction Kinetics, Vibrational Spectra

Scientific paper

A mechanism involving vibrationally excited nitrogen is suggested as a possible explanation for the large-scale depletions and the ion composition within these depletions observed in the equatorial spread-F phenomenon. Estimates of the value of rate constant of the reaction of O(+) and N2 to form NO(+) and N inside and outside the depletion are obtained based on AE-C measurements of NO(+) chemistry and ion composition during a single equatorial crossing, and are shown to vary from 1.7 x 10 to the -11th cu cm/sec within a depletion to 4.0 x 10 to the -13th outside the depletion in a case where the molecular ion concentration was greater than the atomic ion concentration within the hole. The enhancement of the rate constant within the depletion is attributed to the presence of vibrationally excited nitrogen, which is at a maximum around the onset time of the spread-F.

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