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The European Physical Journal D

, Volume 43, Issue 1–3, pp 261–266 | Cite as

The effect of volumetric weighting in the interaction of intense laser fields with clusters

  • T. DöppnerEmail author
  • J. P. Müller
  • A. Przystawik
  • J. Tiggesbäumker
  • K.-H. Meiwes-Broer
Spectroscopy and Dynamics with Short Laser Pulses

Abstract.

Silver clusters embedded in helium nanodroplets are exposed to intense femtosecond laser pulses (1013 - 1016 W/cm2). The signal of highly charged (q≤11) atomic fragments is maximized by delayed plasmon enhanced ionization using stretched laser pulses. Further details with respect to the dynamics of the charging process can be obtained, when the intensity distribution within the laser focus is taken into account. For the first time, the z-scan method is applied to clusters which offers a route to investigate the explicit dependence of the ion signals with respect to the laser intensity. By taking advantage of the volumetric weighting effect ionization thresholds are determined, yielding values well below 1014 W/cm2 for Agq+ ions with q≤11.

PACS.

36.40.Gk Plasma and collective effects in clusters 52.50.Jm Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.) 36.40.Wa Charged clusters 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Authors and Affiliations

  • T. Döppner
    • 1
    Email author
  • J. P. Müller
    • 1
  • A. Przystawik
    • 1
  • J. Tiggesbäumker
    • 1
  • K.-H. Meiwes-Broer
    • 1
  1. 1.Institute of Physics, University of Rostock, Universitätsplatz 3RostockGermany

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