Laser excitation spectroscopy of the A and B states of jet-cooled copper dimer: evidence for large electronic isotope shifts

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Publication Type Journal Article
School or College College of Science
Department Chemistry
Creator Morse, Michael David
Other Author McCaffrey, John G.; Bennett, Robert R.; Breckenridge, W. H.
Title Laser excitation spectroscopy of the A and B states of jet-cooled copper dimer: evidence for large electronic isotope shifts
Date 1989
Description Fluorescence excitation spectra recorded for the A-X system of jet-cooled Cu2 show conclusive evidence of a ?? = 0 transition, and the A state is thereby definitively assigned as ??u+. A previous assignment of the B state as ??u+ is confirmed, but the vibrational levels of this state are complicated by the presence of a perturbation at v' = 0. The perturbing state does not, however, appear to be either of the two optically accessible electronic states in this spectral region. Anomalously large electronic isotope shifts are observed for the A and B states, and this behavior is discussed in terms of the correspondingly large "specific mass shifts" observed in the optical spectra of atomic copper for transitions that couple states differing in the number of d electrons. Due to the large spin-orbit coupling constants in the "cMiole" configurations, it is proposed that the low-energy-excited molecular states of Cu2 derived from these configurations should be described by Hund's case (c) coupling. Dynamical effects observed in the gas phase and in solid matrices are briefly discussed in terms of this bonding scheme.
Type Text
Publisher American Institute of Physics (AIP)
Volume 91
Issue 1
First Page 92
Last Page 103
DOI 10.1063/1.457454
Language eng
Bibliographic Citation McCaffrey, J. G., Bennett, R. R., Morse, M. D., & Breckenridge, W. H. (1989). Laser excitation spectroscopy of the A and B states of jet-cooled copper dimer: evidence for large electronic isotope shifts. Journal of Chemical Physics, 91(1), 92-103.
Rights Management ¬©American Institute of Physics. The following article appeared in McCaffrey, J. G., Bennett, R. R., Morse, M. D., & Breckenridge, W. H. (1989). Laser excitation spectroscopy of the A and B states of jet-cooled copper dimer: evidence for large electronic isotope shifts. Journal of Chemical Physics, 91(1), 92-103 and may be found at http://dx.doi.org/10.1063/1.457454.
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Identifier ir-main,16972
ARK ark:/87278/s68349ns
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Date Created 2012-06-13
Date Modified 2012-06-13
ID 706923
Reference URL https://collections.lib.utah.edu/ark:/87278/s68349ns
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