Scientific Results

The nu(3) band of (CO2)-C-14-O-16 molecule measured by optical-frequency-comb-assisted cavity ring-down spectroscopy

Year: 2011

Authors: Galli I., Cancio P., Di Lonardo G., Fusina L., Giusfredi G., Mazzotti D., Tamassia F., De Natale P.

Autors Affiliation: Ist Nazl Ott CNR, I-50019 Sesto Fiorentino, FI, Italy; LENS, I-50019 Sesto Fiorentino, FI, Italy; Univ Bologna, Dipartimento Chim Fis & Inorgan, I-40136 Bologna, Italy

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.

Journal/Review: MOLECULAR PHYSICS

Volume: 109 (17-18)      Pages from: 2267  to: 2272

More Information: This work was partially supported by Ente Cassa di Risparmio di Firenze and by Regione Toscana through the projects CTOTUS and SIMPAS, in the framework of POR-CReO FESR 2007-2013.
KeyWords: Infrared spectroscopy; Molecules; Natural frequencies; Optical materials; Spectrometers; Spectroscopy, Absolute frequency; Cavity ring down; Cavity ring down spectroscopies; Experimental frequencies; Optical frequency combs; Relative uncertainty; Spectroscopic parameters; Vibrational transitions, Light measurement
DOI: 10.1080/00268976.2011.614284

Citations: 17
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