Computer Science – Sound
Scientific paper
Jul 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985cajph..63..983m&link_type=abstract
Canadian Journal of Physics (ISSN 0008-4204), vol. 63, July 1985, p. 983-987.
Computer Science
Sound
5
Auroral Spectroscopy, Emission Spectra, Nitrogen, Optical Emission Spectroscopy, Oxygen Spectra, Atmospheric Chemistry, Energy Transfer, Molecular Excitation, Reaction Kinetics, Rocket Sounding
Scientific paper
Rocket measurements of the O(1S-1D) 557.7-nm and N2(+)(B2Sigma u - X2 Sigma g +) (0-0) 391.4-nm emission profiles for the steady component of an international brightness coefficient 1+ aurora, which exhibited irregular pulsations, are presented. The N2(+) volume emission profile is found to be in good agreement with theoretical profiles calculated from the primary-electron energy spectra recorded near apogee on the same flight. The O(1S) emission is found to increase with altitude relative to the N2(+) emission between 100 and 130 km, and possible mechanisms for the excitation of O(1S) are examined. It is found that either energy transfer from N2(A3Sigma u +) or the reaction of N(+) with O2 can explain most of the observed O(1S) emission, but the possibility of a different excitation mechanism cannot be ruled out.
Llewellyn Edam J.
McDade Ian C.
Solheim Brian H.
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