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APS » Journals » Phys. Rev. Lett. » Volume 95 » Issue 24
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Phys. Rev. Lett. 95, 243002 (2005) [4 pages]

Experimental Confirmation of Quantum Monodromy: The Millimeter Wave Spectrum of Cyanogen Isothiocyanate NCNCS

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Brenda P. Winnewisser, Manfred Winnewisser, Ivan R. Medvedev, Markus Behnke, and Frank C. De Lucia
Department of Physics, The Ohio State University, Columbus, Ohio 43210-1106, USA

Stephen C. Ross
Department of Physics and Centre for Laser, Atomic, and Molecular Sciences, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada

Jacek Koput
Department of Chemistry, Adam Mickiewicz University, 60-780 Poznan, Poland

Received 22 August 2005; published 5 December 2005

We have made energy-momentum maps for the experimental end-over-end rotational energy and the two-dimensional bending vibrational energy, both of which confirm the dominating effects of nontrivial quantum monodromy in cyanogen isothiocyanate. Accidental resonances in the rotational spectra yield accurate intervals between bending states.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.243002
DOI:
10.1103/PhysRevLett.95.243002
PACS:
31.15.Ar, 31.50.Bc, 33.15.Hp, 33.20.Bx
 
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