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Volume 142, 2009
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Rotational spectroscopy of single carbonyl sulfide molecules embedded in superfluid helium nanodroplets

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Abstract

The pure rotation spectrum of carbonyl sulfide embedded in superfluid helium nanodroplets was measured in the frequency range from 4 to 15.5 GHz. Four lines, corresponding to the J = 1–0, J = 2–1, J = 3–2, and J = 4–3 transitions, were found. The line widths of the transitions increase with increasing rotational quantum number J, which is indicative of a distribution of the effective B rotational constant. A comparison of the pure rotational spectrum with the microwave-infrared double resonance spectrum [S. Grebenev, M. Havenith, F. Madeja, J. P. Toennies, and A. F. Vilesov, J. Chem. Phys., 2000, 113(20), 9060] reveals that the double resonance measurement scheme probes predominantly rotational transitions within the vibrationally excited state.

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Publication details

The article was received on 06 Nov 2008, accepted on 04 Feb 2009 and first published on 27 May 2009


Article type: Paper
DOI: 10.1039/B819844F
Citation: Faraday Discuss., 2009,142, 297-309
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    Rotational spectroscopy of single carbonyl sulfide molecules embedded in superfluid helium nanodroplets

    R. Lehnig, P. L. Raston and W. Jäger, Faraday Discuss., 2009, 142, 297
    DOI: 10.1039/B819844F

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