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Fragmentation Probabilities Of Excited Alkali Clusters

Author

Listed:
  • S. RUTZ

    (Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, 14195 Berlin, Germany)

  • K. KOBE

    (Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, 14195 Berlin, Germany)

  • H. KÜHLING

    (Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, 14195 Berlin, Germany)

  • A. RUFF

    (Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, 14195 Berlin, Germany)

  • E. SCHREIBER

    (Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, 14195 Berlin, Germany)

  • G. SOMMERER

    (Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, 14195 Berlin, Germany)

  • L. WÖSTE

    (Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, 14195 Berlin, Germany)

Abstract

Employing transient resonant two-color two-photon ionization spectroscopy in the picosecond and femtosecond regime, we have investigated the fragmentation dynamics of several excited electronic states of alkali clusters. In the case of theNa3C-state a simple energy-level model well describes the single exponential decay found for the temporal evolution of the transient spectra. This allowed to estimate fragmentation probabilities of the C-state vibrational bands as well as the onset of predissociation. For larger clusters,Nanas well asKnwithn≥3, the ultrafast transients could be measured. By means of an improved fragmentation model the fragmentation probabilities are determined as a function of the cluster size. Significant differences between.NanandKnclusters are discussed.

Suggested Citation

  • S. Rutz & K. Kobe & H. Kühling & A. Ruff & E. Schreiber & G. Sommerer & L. Wöste, 1996. "Fragmentation Probabilities Of Excited Alkali Clusters," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 3(01), pages 583-589.
    • Handle: RePEc:wsi:srlxxx:v:03:y:1996:i:01:n:s0218625x96001054
    DOI: 10.1142/S0218625X96001054
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