Line parameter measurements and calculations of CO broadened by H2O and CO2 at elevated temperatures |
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Authors: | HS Lowry CJ Fisher |
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Institution: | Arvin/Calspan Field Services, Inc., AEDC Division, Arnold Air Force Station, TN 37389, U.S.A. |
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Abstract: | Measurements of collisional broadening of four fundamental CO lines in atmospheres of CO2 and H2O at 300–600 K were made. The Voigt line-shape model was fitted parametrically to the absorption spectra line-shapes. The results are compared with other experimental studies and with theoretical calculations for CO2 broadening. Absorption spectra of the exhaust gases of a flat flame were recorded and analyzed to yield CO concentration, temperature, and line half-widths. The flame spectra half-widths were compared with extrapolations of lower temperature data using the simple power law approximation . The utility of this approximation in the development of combustion diagnostic techniques is discussed. |
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