The N II 2143-A dayglow from Spacelab 1

Details The N II 2143-A dayglow from Spacelab 1 The N II 2143-A dayglow from Spacelab 1

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.6679t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, July 1, 1985, p. 6679-6683.

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Auroral Spectroscopy, Dayglow, Photodissociation, Spacelab, Thermosphere, Ultraviolet Spectra, Auroral Ionization, Rocket Sounding

Scientific paper

During the Spacelab 1 shuttle mission (November 28 to December 7, 1983) spectral measurements were made in the ultraviolet which resolve the N+(5S) doublet at 2143 Å from the NO(1-0) gamma band at 2148 Å in the upper thermosphere. The measured slant path surface brightness profile of the N+ feature is well explained by photodissociative ionization of N2 with a yield of 0.2. The intensity of the N+ feature relative to the NO(1-0) gamma band is dependent on the conditions prevailing at the time and location of the measurement. For the near-twilight mid-latitude measurements made here, in the upper thermosphere the N+(5S) feature would contribute 20% to 75% of a low spectral resolution NO measurement.

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