title: Spectroscopic identification of carbon dioxide clusters: (CO2)6 to (CO2)13.
abstract: In spite of wide interest in CO(2) clusters, only dimers and trimers have previously been assigned to specific infrared bands. Here, transitions for clusters with 6-13 molecules are identified in the ν(3) region (∼2350 cm(-1)). Spectra are observed in a supersonic jet (T ∼ 2.5 K) using a tunable laser probe, and analyzed with the aid of cluster calculations based on a widely-used model potential. Vibrational origins show blue-shifts significantly larger than predicted by resonant dipole interactions.
authors.affiliation: Department of Physics and Astronomy, University of Calgary, 2500 University Drive North West, Calgary, Alberta T2N 1N4, Canada.
authors.forename: J Norooz
authors.initials: JN
authors.lastname: Oliaee
authors.forename: M
authors.initials: M
authors.lastname: Dehghany
authors.forename: N
authors.initials: N
authors.lastname: Moazzen-Ahmadi
authors.forename: A R W
authors.initials: AR
authors.lastname: McKellar