Hamburg 2009 – scientific programme

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A: Fachverband Atomphysik

A 8: Atomic Clusters I

A 8.2: Fachvortrag

Tuesday, March 3, 2009, 11:00–11:30, VMP 6 HS-B

Ionization dynamics of embedded Xenon clusters in strong laser fields — •Christian Peltz and Thomas Fennel — Institute of Physics, University of Rostock, Germany

Efficient energy absorption and the emission of highly charged atomic ions are well known effects emerging from the interaction of ultrashort and intense near-infrared laser pulses with clusters. Besides the many corresponding experiments on free clusters, where the dynamics of heating and ionization is relativly well understood, studies on embedded clusters show comparable or even higher charge states at moderate laser intensities^[1]. For a theoretical study of the matrix effects on the absorption and ionization processes, such as an early plasmon resonance^[2] or ionization threshold lowering in the cluster medium^[3], we use a semiclassical molecular dynamics approach^[3]. Results on the spatially resolved energy absorption as well as on final ion charge spectra for dual-pulse excitation of Xe_N@He_M as function of laser intensity and size of the matrix^[4] will be presented.
T. Döppner et al. , to be published
A. Mikaberidze et al. , Phys. Rev. A 77, 041201 (2008)
T. Fennel et al. , Phys. Rev. Lett. 99, 233401 (2007)
Ch. Peltz et al. , in preparation