Computer Science
Scientific paper
Nov 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977josa...67.1532m&link_type=abstract
Optical Society of America, Journal, vol. 67, Nov. 1977, p. 1532-1537.
Computer Science
Absorptance, Acoustic Excitation, Adiabatic Conditions, Infrared Spectra, Pressure Effects, Temperature Effects, Water Vapor, Absorption Spectra, Concentration (Composition), Hydrochloric Acid, Molecular Excitation, Spectral Bands, Static Pressure, Thermodynamic Properties
Scientific paper
An acoustic excitation technique is used to determine the adiabatic pressure derivative of the spectral absorptance of the 2.7 and 1.9 micron water vapor bands, and the 3.5 micron HCl band. The dependence of this derivative on thermodynamic parameters such as temperature, concentration, and pressure is evaluated. A cross-flow water vapor system is used to measure spectral absorptance. Taking F as the ratio of nonrigid to rotor line strengths, it is found that an F factor correction is needed for the 2.7 micron band. The F factor for the 1.9 micron band is also determined. In the wings of each band a wavelength can be found where the concentration dependence is predominant. Farther out in the wings a local maximum occurs for the temperature derivative. It is suggested that the pressure derivative is significant in the core of the band.
Broersma S.
Mathai C. V.
Walls W. L.
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