| Autor: |
Vigasin, A.A, Huisken, F, Pavlyuchko, A.I, Ramonat, L, Tarakanova, E.G |
| Zdroj: |
Journal of Molecular Spectroscopy; September 2001, Vol. 209 Issue: 1 p81-87, 7p |
| Abstrakt: |
This paper aims at examination of the (CO2)2spectral absorption profile retrieved from the room temperature CO2collision-induced absorption (CIA) spectrum in the region of the ν1, 2ν2Fermi doublet. The assignment of (CO2)2vibrations is discussed, paying due attention to high-resolution CARS observations in the regions of νlowand νup. A variational solution of the anharmonic vibrational problem for the (CO2)2dimer was obtained using an extended basis set consisting of harmonic and Morse oscillator wave functions. This allowed for a satisfactory description of the vibrational dimer ν1, 2ν2spectrum from first principles. In particular, we have succeeded in proving that the diffuse absorption band seen in the trough between the major Fermi-coupled CIA bands belongs to combinations of CO2bending vibrations in a dimer. |
| Databáze: |
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