Other
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.2444m&link_type=abstract
Journal of Geophysical Research, vol. 87, Apr. 1, 1982, p. 2444-2452.
Other
46
Atmospheric Chemistry, Auroral Arcs, Molecular Spectra, Nitrogen, Oxygen Spectra, Ultraviolet Spectroscopy, Atmospheric Composition, Atmospheric Models, Electronic Spectra, Far Ultraviolet Radiation
Scientific paper
Far ultraviolet observations of the auroral and airglow provide quantitative diagnostics of atmospheric abundances, energy deposition, and excitation processes because many atmospheric species have resonance transitions in this spectral region. The spectroscopy of an active auroral arc observed above Fort Churchill on March 29, 1978, has been discussed by Feldman and Gentieu (1982). The present investigation attempts to quantify the measurements with the aid of a self-consistent approach used by Meier et al. (1980). It is shown that the primary electron spectrum has a characteristic energy of 1.75-2.5 keV, corresponding to energy deposition rates of 5-8 erg/(sq cm-sec). Atomic nitrogen emissions resulting from molecular dissociative excitation show no evidence of multiple scattering, in contrast to data from other auroras.
Conway Robert R.
Feldman Paul D.
Gentieu E. P.
Meier Robert R.
Strickland Douglas J.
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