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Vibrational spectroscopy of neutral silicon clusters via far-IR-VUV two color ionization

J. Chem. Phys. 131, 171105 (2009); doi:10.1063/1.3262803

Published 5 November 2009

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André Fielicke,1 Jonathan T. Lyon,1 Marko Haertelt,1 Gerard Meijer,1 Pieterjan Claes,2 Jorg de Haeck,2 and Peter Lievens2
1Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
2Laboratory of Solid State Physics and Magnetism and INPAC-Institute for Nanoscale Physics and Chemistry, K. U. Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
Tunable far-infrared-vacuum-ultraviolet two color ionization is used to obtain vibrational spectra of neutral silicon clusters in the gas phase. Upon excitation with tunable infrared light prior to irradiation with UV photons we observe strong enhancements in the mass spectrometric signal of specific cluster sizes. This allowed the recording of the infrared absorption spectra of Si6, Si7, and Si10. Structural assignments were made by comparison with calculated linear absorption spectra from quantum chemical theory. ©2009 American Institute of Physics
History: Received 30 June 2009; accepted 20 October 2009; published 5 November 2009
Permalink: http://link.aip.org/link/?JCPSA6/131/171105/1
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EPAPS

KEYWORDS and PACS

Keywords
PACS
  • 36.40.Mr
    Spectroscopy and geometrical structure of atomic and molecular clusters
  • 33.20.Tp
    Vibrational analysis (molecular spectra)
  • 33.20.Ni
    Vacuum ultraviolet molecular spectra
  • 33.20.Ea
    Infrared molecular spectra
  • 33.80.Eh
    Autoionization, photoionization, and photodetachment of molecules
  • 33.15.Mt
    Molecular rotation, vibration, and vibration-rotation constants
  • YEAR: 2009

PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
Publisher:
AIP is a member of CrossRef AIP

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