The production efficiency of O/+//2P/ ions by auroral electron impact ionization

Details The production efficiency of O/+//2P/ ions by auroral electron impact ionization The production efficiency of O/+//2P/ ions by auroral electron impact ionization

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.3612r&link_type=abstract

Journal of Geophysical Research, vol. 87, May 1, 1982, p. 3612-3616.

Physics

16

Airglow, Auroral Ionization, Electron Impact, Oxygen Ions, Efficiency, Electronic Spectra, Nitrogen

Scientific paper

Observational data obtained from the Visible Airglow Experiment (VAE) on the Atmospheric Explorer D satellite is used to deduce the production efficiency of the excited 2P state of the O(+) ion in the electron impact ionization of O under auroral conditions. Measurements of the airglow intensity in the O(+)(2P-2D) transition band 7320-7330 A by the upward looking VAE photometer were compared with the intensity predicted on the basis of electron spectra measured at heights from 211 to 235 km within the emission. A production efficiency of 18% is obtained, which is close to theoretical predictions and supports the theoretical value of 40% for the production of the 2D state.

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