Düsseldorf 2007 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 18: Interaction with VUV and X-Ray light

A 18.5: Vortrag

Mittwoch, 21. März 2007, 17:45–18:00, 6G

Probing the cluster dynamics with atto-second XUV laser pulses — •Ionuţ Georgescu, Ulf Saalmann, and Jan-Michael Rost — Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzerstr. 38, 01187 Dresden, Germany

Xenon clusters have been exposed to short intense laser pulses at 98nm wavelength within the first testing stages of the upcoming X-Ray Free Electron Laser at DESY, Hamburg. The experiment [1] has shown an unexpectedly effective energy absorption mechanism resulting into Coulomb explosion of the clusters with high measured ionic charge states.

Several theoretical models [2-5] have managed to explain the outcome of the experiments, but they all disagree on the internal mechanisms of the energy absorption. We propose here a pump-probe scheme with atto-second XUV laser pulses which would offer a time resolved picture of the transient ionic charge states in the cluster.
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R. Santra and C.H. Greene, PRL 91, 233401 (2003)
C. Siedschlag and J.M. Rost, PRL 93, 043402 (2004)
C. Jungreuthmayer et.al., J. Phys. B 38, 3029 (2005)
M. Rusek and A. Orlowski, PRA 71, 043202 (2005)