The infrared spectrum of the rare isotopologue (CO2)-C-14-O-16 has been investigated in the range 2190-2250 cm(-1) with a frequency-comb-referenced cavity ring-down spectrometer. Thirty-three ro-vibrational transitions of the nu(3) fundamental band have been detected. Their absolute frequency was measured with a relative uncertainty ranging from 7.1 x 10(-8) to 1.1 x 10(-8). The experimental frequencies were fitted to the conventional Hamiltonian of a linear molecule and a new set of spectroscopic parameters for the fundamental vibrational state has been improved for this species.
The nu(3) band of (CO2)-C-14-O-16 molecule measured by optical-frequency-comb-assisted cavity ring-down spectroscopy
Galli Iacopo;Giusfredi Giovanni;Mazzotti Davide;De Natale Paolo
2011
Abstract
The infrared spectrum of the rare isotopologue (CO2)-C-14-O-16 has been investigated in the range 2190-2250 cm(-1) with a frequency-comb-referenced cavity ring-down spectrometer. Thirty-three ro-vibrational transitions of the nu(3) fundamental band have been detected. Their absolute frequency was measured with a relative uncertainty ranging from 7.1 x 10(-8) to 1.1 x 10(-8). The experimental frequencies were fitted to the conventional Hamiltonian of a linear molecule and a new set of spectroscopic parameters for the fundamental vibrational state has been improved for this species.File in questo prodotto:
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