The He2 - OCS Complex: Comparison Between Theory and Experiment
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Authors
Oliaee, J. Norooz
Moazzen-Ahmadi, N.
McKellar, A.R.W.
Wang, Xiao-Gang
Carrington, Tucker Jr
Date
2017-10-31
Type
journal article
Language
en
Keyword
Atomic and Molecular Clusters
Alternative Title
Abstract
OCS is an ideal probe for quantum solvation effects in cold helium clusters. He2-OCS is the “second step” in going from a single OCS molecule to a large doped superfluid helium cluster. Here assignment of the spectrum of He2-OCS is significantly extended to higher values of J, K, and vt (the low frequency torsional vibration). The observation of a new infrared band, OCS n1 + n3, taken together with the known n1 band, enables assignments to be verified by comparing ground state combination differences. Relatively straightforward scaling of
previously calculated theoretical energy levels gives a remarkably good fit to experiment.