Calculation of absorption in the microwindows of the 4.3-micron CO2 band from an ECS scaling analysis

Details Calculation of absorption in the microwindows of the 4.3-micron CO2 band from an ECS scaling analysis Calculation of absorption in the microwindows of the 4.3-micron CO2 band from an ECS scaling analysis

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jqsrt..42..509b&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer (ISSN 0022-4073), vol. 42, Dec. 1989, p. 509-520.

Statistics

Applications

16

Absorption Spectra, Carbon Dioxide, Infrared Windows, Vibrational Spectra, Absorptivity, Molecular Collisions, Spectral Bands, Spectral Line Width, Temperature Dependence

Scientific paper

Line coupling induced by collisions leads to drastic modifications of the absorption profile in the microwindows of the self- and N2-broadened nu(3) CO2 fundamental vibration-rotation band. Calculations of these modifications have been performed by using the energy-corrected sudden (ECS) scaling law. Linewidths have been inverted to obtain effective rotation-translation basis rate constants and to deduce R-R, P-P and R-P line couplings. The characteristics of these couplings are presented and discussed. Calculated ECS profiles in the microwindows are compared with experimental data and also with previous results based on a statistical fitting law. The ECS approach is particularly suitable for practical infrared spectroscopic applications including line-coupling effects.

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