Far-Infrared self-broadening in methylcyanide: absorber-perturber resonance
Authors: Buffa G., Tarrini O., De Natale P., Inguscio M., Pavone FS., Prevedelli M., Evenson K.M., Zink L.R., Schwaab G.W.
Autors Affiliation: Dipartimento di Fisica dell’Università, Piazza Torricelli 2, 56126 Pisa, Italy;
Dipartimento di Fisica, Università di Firenze and European Laboratory for Nonlinear Spectroscopy (LENS) Largo E. Fermi 2, 50125 Firenze, Italy;
National Institute for Standards and Technology, Boulder, CO 80303 USA;
Max Planck Institut fur Radioastronomie, W-5300 Bonn, Germany
Abstract: Using tunable far-infrared spectrometers with high-frequency stability and accuracy, we have measured the self-pressure broadening and shift of CH3CN. We obtained clear evidence of absorber-perturber resonance effects on the collisional line shape. This tests the theoretical model and its possible improvements and also allows us to make broadening and shift predictions for a large class of molecules. Moreover, the resonance effect produces a theoretical temperature dependence of self-broadening that is very different from what is commonly assumed.
Journal/Review: PHYSICAL REVIEW A
Volume: 45 (9) Pages from: 6443 to: 6450
KeyWords: rotational lines; spectrum; shiftDOI: 10.1103/PhysRevA.45.6443Citations: 22data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-01-29References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here