Other
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985scgl.work..155k&link_type=abstract
In NASA. Marshall Space Flight Center 2d Workshop on Spacecraft Glow p 155-164 (SEE N86-13239 03-88)
Other
Chemiluminescence, Desorption, Luminosity, Recombination Reactions, Spacecraft Orbits, Earth Orbits, Low Altitude, Nitric Oxide, Nitrogen Dioxide
Scientific paper
Infrared photons from the radiative cascade accompany both the gas phase NO2 continuum chemiluminescence (which originates from its 2B2 and 2B1 states) and the NO beta bands. When these upper electronic states are excited by recombination/desorption at surfaces of low Earth orbiting spacecraft, similar IR emission spectrums will be observed. The principal NO2 features (other than the long wavelength tail of its electronic transitions) are the nu3 fundamental sequence near 6.2 microns and nu1 + nu3 intercombination bands near 3.6 microns; NO would emit the delta v=1 and delta v=2 systems above 5.3 and 2.7 microns. Because of the long radiative lifetimes of the upper vibrational states, the infrared radiances in projections parallel to the vehicle surface (which we estimate) are substantially less than those of the visible and ultraviolet glows.
Barrett J. L.
Kofsky Irving L.
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