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Real-time observation of ultrafast ionization and fragmentation of mercury clusters

  • B. Bescós
  • B. Lang
  • J. Weiner
  • V. Weiss
  • E. Wiedenmann
  • G. Gerber
Conference paper

Abstract

We report on time-resolved multiphoton ionization and fragmentation dynamics of free Hg n clusters (n ≤ 110) with femtosecond laser pulses. Already at laser intensities of 1011 W/cm2 we observe prompt formation of singly, doubly, and triply charged Hgn clusters. In pump-probe experiments short-time (0–5 ps) oscillatory modulations of the transient Hg n + , and Hg n 2+ signals are observed which indicate an intermediate state dynamics common to all observed cluster sizes and charge states. Long-time (0–200 ps) transient ionization signals show caged dissociation and recombination chromophore dynamics.

PACS

33.80.Rv Multiphoton ionization and excitation to highly excited states 36.40.Qv Stability and fragmentation of clusters 

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Copyright information

© Springer-Verlag Italia 1999

Authors and Affiliations

  • B. Bescós
    • 1
  • B. Lang
    • 1
  • J. Weiner
    • 2
  • V. Weiss
    • 1
  • E. Wiedenmann
    • 1
  • G. Gerber
    • 1
  1. 1.Physikalisches InstitutUniversität WürzburgWürzburgGermany
  2. 2.Université Paul SabatierToulouse, Cedex 04France

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