Observation of nitric oxide rovibrational band head emissions in the quiescent airglow during the CIRRIS-1A space shuttle experiment

Details Observation of nitric oxide rovibrational band head emissions in the quiescent airglow during the CIRRIS-1A space shuttle experiment Observation of nitric oxide rovibrational band head emissions in the quiescent airglow during the CIRRIS-1A space shuttle experiment

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.2679s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 23, p. 2679-2682

Physics

25

Airglow, Atmospheric Composition, Emission Spectra, Excitation, Nitric Oxide, Rotational Spectra, Vibrational Spectra, Atmospheric Chemistry, Infrared Detectors, Interferometers, Space Shuttle Missions

Scientific paper

Band head emissions from highly rotationally excited NO (v, J) (J approx. equals 90) have been observed in the quiescent atmosphere at tangent heights between approximately 115 and 190 km for both sunlit and nighttime conditions. The data were obtained by the Cryogenic Infrared Radiance Instrumentation for Shuttle (CIRRIS-1A) interferometer which was operated on-board the space shuttle between 28 and 30 April 1991. Up to ten emission features between 2020 and 1744/cm in the earthlimb spectra have been identified as the R-branch band heads of the NO delta v = 1 sequence for the vibrational states v(prime) = 1 - 10. The presence of these band heads requires a very high degree of rotational excitation corresponding to rotational energy in excess of 1.4 eV. These are the first observations of emissions from highly rotationally excited NO in the quiescent airglow and they parallel the recent discovery of highly excited pure rotational transitions of OH in the airglow for both nighttime and daytime quiescent conditions.

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