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Measurement and computations for temperature dependences of self-broadened carbon dioxide transitions in the 30012←00001 and 30013←00001 bands
- Source :
- Journal of Quantitative Spectroscopy and Radiative Transfer. 111:1065-1079
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- Using a Fourier transform spectrometer setup we have measured the self-broadened half width, pressure shift, and line asymmetry coefficients for transitions in the 30012’00001 and 30013’00001 vibrational bands of carbon dioxide for four different temperatures. A total of 46 pure CO2 spectra were recorded at 0.008 and 0.009 cm � 1 resolution and at pressures varying from a few Torr to nearly an atmosphere. The individual spectral line profiles have been fitted by a Voigt profile and a speeddependent Voigt profile, to which we have added dispersion profiles to account for weak line mixing. A comparison of the sets of results obtained for each band showed no vibrational dependence of the broadening coefficients. The self-broadening and selfshift coefficients are compared to semiclassical calculations based on the Robert– Bonamy formalism and were found to be in good agreement. The line asymmetry results are compared to line mixing calculations based on the Energy Corrected Sudden (ECS) and Exponential Power Gap models.
- Subjects :
- Voigt profile
energy Corrected Sudden calculations
Radiation
Materials science
media_common.quotation_subject
Semiclassical physics
Asymmetry
Atomic and Molecular Physics, and Optics
Fourier transform spectroscopy
Spectral line
Exponential function
chemistry.chemical_compound
Nuclear magnetic resonance
fourier transform spectroscopy
chemistry
line broadening
Torr
temperature dependences
Carbon dioxide
shifting and mixing
semi-classical calculations
CO2
Atomic physics
Spectroscopy
media_common
Subjects
Details
- ISSN :
- 00224073
- Volume :
- 111
- Database :
- OpenAIRE
- Journal :
- Journal of Quantitative Spectroscopy and Radiative Transfer
- Accession number :
- edsair.doi.dedup.....7ec4edc5a2cf3708445e9c258f93aa90