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  • 35.20i  (1)
  • PACS. 33.15.Kr Electric and magnetic moments (and derivatives), polarizability, and magnetic susceptibility - 34.70.+e Charge transfer - 61.48.+c Fullerenes and fullerene-related materials  (1)
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  • 1
    Digitale Medien
    Digitale Medien
    Electric dipole moment and charge transfer in alkali-C molecules (2000)
    Springer
    The European physical journal 12 (2000), S. 147-151 
    Details
    ISSN: 1434-6079
    Schlagwort(e): PACS. 33.15.Kr Electric and magnetic moments (and derivatives), polarizability, and magnetic susceptibility - 34.70.+e Charge transfer - 61.48.+c Fullerenes and fullerene-related materials
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract: We have measured the electric dipole moment of isolated alkali-C60 molecules (with alkali = Li, Na, K, Rb, and Cs) by molecular beam deflection experiments. The dipole increases from 12.4 D for LiC60 to 21.5 D for CsC60. These results are compared to those deduced from an analytical polarizable-ion model. This comparison shows that there is a strong electron transfer from the alkali atom to the C60 cage, which is almost complete for KC60 and RbC60.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s100530070051
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    High resolution spectroscopy of small metal clusters (1991)
    Springer
    The European physical journal 19 (1991), S. 7-12 
    Details
    ISSN: 1434-6079
    Schlagwort(e): 36.40 +d ; 31.50 +w ; 35.20i
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The optical absorption spectrum of small lithium clusters has been measured up to Li8. In Li3 high resolution Two Photon Ionization (TPI) spectra have been recorded allowing us to determine the geometry and potential surfaces of the ground and excited states. In larger clusters, the excited states are dissociative and the absorption spectra have been obtained by Depletion Spectroscopy. Vibronic resolution is still achieved in Li4, but not in larger clusters. The measured spectra exhibit a rather small number of transitions to electronically excited states. In Li7, only one intense band is observed in the blue region, while in Li8, an intense band is also observed in the blue region and a much weaker band in the red region. All the obtained results are in very good agreement with the ab initio calculation of Bonacic-Koutecky et al. This demonstrates that molecular effects are always present in these small clusters. The semi-classical models of surface plasma resonances are also discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01448245
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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