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dc.creatorKeutsch, F. N.en_US
dc.creatorFellers, R. S.en_US
dc.creatorPetersen, P. B.en_US
dc.creatorViant, Mark R.en_US
dc.creatorBrown, M. G.en_US
dc.creatorSaykally, R. J.en_US
dc.date.accessioned2006-06-15T19:55:42Z
dc.date.available2006-06-15T19:55:42Z
dc.date.issued2000en_US
dc.identifier2000-MF-07en_US
dc.identifier.urihttp://hdl.handle.net/1811/19666
dc.description$^{a}$W. Klopper, M. Schutz, H. P. Luthi, S. Leutwyler, J. Chem. Phys. 103, 1085 (1995). $^{b}$A. Luzar, D. Chandler, Nature 379, 55(1996).en_US
dc.descriptionAuthor Institution: Department of Chemistry, University of California Berkeleyen_US
dc.description.abstractWe report the observation of a new vibration-rotation-tunneling (VRT) band of $(D_{2}O)_{3}$ at $142.8 cm^{-1}$ and a set of four bands of $(H_{2}O)_{3}$ around $520 cm^{-1}$. These new bands represent the first observation of a translational and librational vibration for a water cluster. The observed VRT spectrum of $(D_{2}O)_{3}$ at $142.8 cm^{-1}$, in the translational band of the liquid, is assigned to a combination band or mixed level of the asymmetric hydrogen bond stretch and a torsional vibration. The predicted frequencies of the hydrogen bond stretching modes are too high, presumably because calculations fail to include the necessary coupling between stretching and torsional $motions^{a}$. The bands of $(H_{2}O)_{3}$ around $520 cm^{-1}$ lie in the librational band region of liquid water and are tentatively assigned to the our of plane librational vibration. The observation of at least four bands within $8 cm^{-1}$ is explained by a dramatically increased splitting of the excited state rovibrational levels by bifurcation-tunneling. The experimental results presented should therefore allow for the first exact determination of the height of the bifurcation tunneling barrier. The tunneling time scale is estimated at 2-4ps, similar to those of several important dynamical processes in bulk $water^{b}$.en_US
dc.format.extent140914 bytes
dc.format.mimetypeimage/jpeg
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleVRT-SPECTROSCOPY IN THE TRANSLATIONAL AND LIBRATIONAL BAND REGION OF LIQUID WATER: HYDROGEN BOND TUNNELING DYNAMICS IN WATER CLUSTERSen_US
dc.typearticleen_US


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