Accession Number : AD0710607

Title :   INFRARED EMISSION AT 2.7 MICRONS FROM FLOWING CO2-N2* MIXTURES.

Descriptive Note : Research rept. Jul 69-Jan 70,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Oettinger,Peter E. ; Horn,Kenneth P.

Report Date : 31 JUL 1970

Pagination or Media Count : 22

Abstract : A flow tube has been constructed wherein ground-state CO2 and vibrationally excited N2 molecular streams interact and the combined flow is spectrally investigated at selected downstream stations. The close coupling between the lower vibrational levels of N2(X singlet Sigma(g)(+)) and the CO2 asymmetric stretch mode (00 v3) allows rapid energy exchange to these levels, followed by internal redistribution among the vibrational states of the CO2 modes. In order to determine the rate of populating the mixed-mode 10 1 and 02 1 states of CO2, spectroscopic observations were made at selected locations along the flow tube of the profile of the 2.7 micron resonance radiation band corresponding to these levels. The magnitude and spectral distribution of this radiation are discussed, as well as the associated reaction rates. (Author)

Descriptors :   (*CARBON DIOXIDE, EMISSIVITY), (*GAS LASERS, GAS FLOW), EXCITATION, NITROGEN, MOLECULAR ENERGY LEVELS, INFRARED RADIATION, INFRARED SPECTRA

Subject Categories : Lasers and Masers
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE