Statistics – Computation
Scientific paper
Apr 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jqsrt..57..519b&link_type=abstract
Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 57, issue 4, pp. 519-524
Statistics
Computation
1
Carbon Dioxide: Infrared Spectra, Carbon Dioxide: Molecular Processes
Scientific paper
The authors present experimental and theoretical results for the Q-branches of the (12201←01101) and (20001←01101) bands of 12C16O2 lying near 4.7 μm perturbed by He. Measurements were carried out with the LPMA Fourier transform interferometer at room temperature and for atmospheric helium pressures. Computations, within the framework of the impact approximation, take into account line mixing effects. The relaxation matrix is modelled with the energy corrected sudden (ECS) approximation derived from the infinite order sudden (IOS) formalism proposed by Green (1989) which is valid for all type of vibrational band. Strong deviations from the sum of the Lorentz shape are observed in the experimental spectra. The ECS calculations account for these experiments quite satisfactorily.
Boissoles J.
Boulet Cilanne
Rachet F.
Thibault F.
Valentin A.
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