Other
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985scgl.work...55d&link_type=abstract
In NASA. Marshall Space Flight Center 2d Workshop on Spacecraft Glow p 55-62 (SEE N86-13239 03-88)
Other
Airglow, Hydroxyl Radicals, Light Emission, Luminosity, Nitrogen Dioxide, Spacecraft Glow, Spacecraft Orbits, Emittance, Explorer Satellites, High Altitude, Hydrogen Atoms, Low Altitude, Luminescence, Space Shuttles
Scientific paper
Recent analyses of the Atmosphere Explorer data are discussed in which it is demonstrated that the satellite glows have two components, one at high altitudes which is consistent with excitation in single collisions of atmospheric oxygen atoms with the vehicle surface and the other at low altitudes which is consistent with double collisions of nitrogen molecules. Contrary to an earlier suggestion, the low-altitude data are not consistent with collisions of oxygen molecules. The separation of the two components strengthens the conclusion that the high-altitude glow arises from vibrationally excited OH molecules produced by a formation mechanism that is different from that leading to the normal atmospheric OH airglow. The spectrum is consistent with association of oxygen and hydrogen atoms at sites on the surface into the vibrational levels of OH. The low-altitude glow is consistent with the green mechanism but there are difficulties with it. The shuttle glows are different and have the spectral appearance of emission from NO2. The characteristics of the shuttle glows and the satellite glows will be contrasted and a tentative resolution of the differences in the Atmosphere Explorer and shuttle glows will be offered.
Dalgarno Alexander
Lecompte M.
Yee Jae Hyung
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