Hyperfine level dependence of the pressure broadening of CH3I rotational transitions in the nu(6)=1 vibrational state

Year: 2000

Authors: Belli S., Buffa G., S. Belli, Di Lieto A., Minguzzi P., Tarrini O., Tonelli M.

Autors Affiliation: Istituto Nazionale di Fisica della Materia, Dipartimento di Fisica dell’Universita’, Piazza Torricelli 2, 56126, Pisa, Italy

Abstract: We studied the hyperfine components of the (J = 10-9, Kl= 9) rotational transition in the nu(6) = 1 excited vibrational state of CH3I, using collinear infrared and mm-wave radiations. The Doppler-free double-resonance technique allowed an accurate determination of the collisional broadening parameters for all the hyperfine components. An evident dependence on the F quantum number was observed and this result is perfectly consistent with a theoretical model allowing calculations of collisional broadening and coupling for the hyperfine components. (C) 2000 Academic Press.

Journal/Review: JOURNAL OF MOLECULAR SPECTROSCOPY

Volume: 201 (2)      Pages from: 314  to: 318

KeyWords: pressure broadening; hyperfine effects; metthyl iodide
DOI: 10.1006/jmsp.2000.8106

Citations: 15
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