The extreme ultraviolet /750-1230 A/ spectrum of an aurora

Details The extreme ultraviolet /750-1230 A/ spectrum of an aurora The extreme ultraviolet /750-1230 A/ spectrum of an aurora

Jan 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977georl...4...41p&link_type=abstract

Geophysical Research Letters, vol. 4, Jan. 1977, p. 41-44.

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Auroral Spectroscopy, Far Ultraviolet Radiation, Spectrum Analysis, Ultraviolet Spectra, Atmospheric Radiation, Atomic Spectra, Geocoronal Emissions, Lyman Alpha Radiation, Optical Thickness, Rocket Sounding, Rocket-Borne Instruments

Scientific paper

Extreme ultraviolet auroral spectra have been obtained in the wavelength range of 750-1230 A resolution with a rocket-borne grating spectrometer. Atomic emissions of N I, N II, O I and O II are the dominant features along with geocoronal H I Lyman alpha. N2 emission bands, which appear strongly in laboratory electron impact spectra, appear only as a modest background continuum between 900 to 1100 A. The observed intensities are consistent with electron impact excitation of O and N2. For optically thick emissions, such as N I at 1200 A, radiation transport along the arc results in an intensity enhancement when viewed through the arc towards the zenith.

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