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|a (TOE)ost10140825
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|a (TOE)10140825
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|a E 1.99:lbl--33327
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|a E 1.99:lbl--33327
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|a lbl--33327
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|a Vibration-rotation-tunneling dynamics in small water clusters
|h [electronic resource]
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| 260 |
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|a Washington, D.C. :
|b United States. Department of Energy. ;
|a Oak Ridge, Tenn. :
|b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
|c 1992.
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| 300 |
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|a 163 p. :
|b digital, PDF file.
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| 336 |
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|a text
|b txt
|2 rdacontent.
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| 337 |
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|a computer
|b c
|2 rdamedia.
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| 338 |
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|a online resource
|b cr
|2 rdacarrier.
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|a Published through SciTech Connect.
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| 500 |
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|a 11/01/1992.
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|a "lbl--33327"
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|a "DE93010427"
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|a Nick Pugliano.
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| 502 |
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|a Thesis (Ph.D.); PBD: Nov 1992.
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| 520 |
3 |
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|a The goal of this work is to characterize the intermolecular vibrations of small water clusters. Using tunable far infrared laser absorption spectroscopy, large amplitude vibration-rotation-tunneling (VRT) dynamics in vibrationally excited states of the water dimer and the water trimer are investigated. This study begins with the measurement of 12 VRT subbands, consisting of approximately 230 transitions, which are assigned to an 82.6 cm<sup>-1</sup> intermolecular vibration of the water dimer-d<sub>4</sub>. Each of the VRT subbands originate from K<sub>a</sub>''=0 and terminate in either K<sub>a</sub>'=0 or 1. These data provide a complete characterization of the tunneling dynamics in the vibrationally excited state as well as definitive symmetry labels for all VRT energy levels. Furthermore, an accurate value for the A' rotational constant is found to agree well with its corresponding ground state value. All other excited state rotational constants are fitted, and discussed in terms of the corresponding ground state constants. In this vibration, the quantum tunneling motions are determined to exhibit large dependencies with both the K<sub>a</sub>' quantum number and the vibrational coordinate, as is evidenced by the measured tunneling splittings. The generalized internal-axis-method treatment which has been developed to model the tunneling dynamics, is considered for the qualitative description of each tunneling pathway, however, the variation of tunneling splittings with vibrational excitation indicate that the high barrier approximation does not appear to be applicable for this vibrational coordinate. The data are consistent with a motion possessing a' symmetry, and the vibration is assigned as the v<sub>12</sub> acceptor bending coordinate. This assignment is in agreement with the vibrational symmetry, the resultsof high level ab initio calculations, and preliminary data assigned to the analogous vibration in the D<sub>2</sub>O-DOH isotopomer.
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| 536 |
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|b AC03-76SF00098.
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| 650 |
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|a Water.
|2 local.
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| 650 |
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|a Vibrational States.
|2 local.
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| 650 |
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|a Rotational States.
|2 local.
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| 650 |
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|a Solid Clusters.
|2 local.
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| 650 |
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|a Dimers.
|2 local.
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| 650 |
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|a Laser Spectroscopy.
|2 local.
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| 650 |
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|a Atomic And Molecular Physics.
|2 edbsc.
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| 710 |
2 |
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|a Lawrence Berkeley National Laboratory.
|4 res.
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| 710 |
1 |
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|a United States.
|b Department of Energy.
|4 spn.
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| 710 |
1 |
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|a United States.
|b Department of Energy.
|b Office of Scientific and Technical Information.
|4 dst.
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| 856 |
4 |
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|u http://www.osti.gov/scitech/biblio/10140825
|z Online Access (via OSTI)
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| 907 |
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|a .b59733615
|b 03-09-23
|c 05-26-10
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| 998 |
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|a web
|b 05-12-17
|c f
|d m
|e p
|f eng
|g
|h 0
|i 3
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| 956 |
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|a Information bridge
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|i 87d73981-e057-5d66-a31e-8e00bda2eaa6
|s e00f5e8a-4051-56c2-bb87-f2cfd8be00ca
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| 952 |
f |
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|p Can circulate
|a University of Colorado Boulder
|b Online
|c Online
|d Online
|e E 1.99:lbl--33327
|h Superintendent of Documents classification
|i web
|n 1
|
