Accession Number : ADA298581

Title :   Deactivation of Vibrationally-Excited NO and CO2 by O-Atoms.

Descriptive Note : Final technical rept. 28 Sep 89-15 Jun 94,

Corporate Author : MCDONNELL DOUGLAS AEROSPACE ST LOUIS MO

Personal Author(s) : Lilenfeld, H. V.

PDF Url : ADA298581

Report Date : JUN 1994

Pagination or Media Count : 28

Abstract : Spectral measurements of the limb radiation of the earth have shown that emissions from the NO(v=1) and CO2(0l (1)0) states dominate the nighttime radiance seen at long wavelengths. At the high altitudes of the thermosphere, the deactivation of the aforementioned molecules helps regulate the temperature. A knowledge of the kinetics of deactivation of these molecules is therefore needed to accurately model the temperature of the thermosphere. Sharma and coworkers have developed a procedure to invert the profiles of the limb emissions to determine the vertical distributions of local atmospheric properties. This procedure can be used to monitor local NO, NO(v=1), CO2 and O densities as well as translational temperatures. They have shown the inversion procedure is sensitive to the rate of the reaction for deactivation of NO(v=1) and CO2(01(1)0) by O atoms. jg p.6

Descriptors :   *THERMOSPHERE, *EXCITATION, *OXYGEN, *NITROGEN OXIDES, *CARBON DIOXIDE, *DEACTIVATION, *VIBRATIONAL SPECTRA, EMISSION, DENSITY, RADIATION, TEMPERATURE, MOLECULES, SPECTROMETRY, ATOMS, VERTICAL ORIENTATION, RADIANCE, HIGH ALTITUDE, NIGHT, INVERSION, LONG WAVELENGTHS, EARTH ATMOSPHERE.

Subject Categories : Inorganic Chemistry
      Atmospheric Physics
      Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE