High precision rovibrational and hyperfine analysis of the v 4 =1 level of bromochlorofluoromethane - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Molecular Structure Année : 2001

High precision rovibrational and hyperfine analysis of the v 4 =1 level of bromochlorofluoromethane

Résumé

We performed a ultra high resolution infrared spectroscopic analysis of the CF-stretching fundamental ν4 of CHFClBr at 9.4 μm. The saturated absorption spectra of the hyperfine structures of many rovibrational transitions of its two more abundant isotopomers were recorded with our high resolution CO2 laser-based spectrometer. This led to the determination of the complete quadrupole coupling tensors of the 3/2 nuclear spins of the bromine and the chlorine in the v4=1 level, which allow the prediction of the hyperfine structure of any rovibrational line with an accuracy of a few kHz. By studying the isotopic dependence of these molecular constants, the quadrupole coupling tensors of two other isotopomers were extrapolated. We also report promising preliminary results of the determination of the rotational and centrifugal distortion constants of the same vibrational level.

Dates et versions

hal-04318853 , version 1 (01-12-2023)

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Citer

Thibaut Marrel, Michaël Ziskind, Christophe Daussy, Christian Chardonnet. High precision rovibrational and hyperfine analysis of the v 4 =1 level of bromochlorofluoromethane. Journal of Molecular Structure, 2001, 599 (1-3), pp.195-209. ⟨10.1016/S0022-2860(01)00851-1⟩. ⟨hal-04318853⟩
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