Hannover 2016 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 33: Interaction with strong or short laser pulses III

A 33.4: Vortrag

Donnerstag, 3. März 2016, 12:00–12:15, f303

Imaging dynamics in xenon doped helium nanodroplets — •B. Langbehn¹, Y. Ovcharenko¹, D. Rupp¹, A. LaForge², O. Plekan³, R. Cucini³, P. Finetti³, D. Iablonskyi⁴, A. Matthews⁵, V. Oliver Álvarez de Lara⁵, P. Piseri⁶, N. Toshiyuki⁷, M. DiFraia⁸, C. Callegari³, K. C. Prince^3,9, K. Ueda⁴, F. Stienkemeier², and T. Möller¹ — ¹TU Berlin — ²Universität Freiburg — ³Elletra-Sincrotrone Trieste — ⁴Tohoku University, Sendai — ⁵EPFL, Lausanne — ⁶Università di Milano — ⁷Kyoto University — ⁸University of Trieste — ⁹IOM-CNR TASC Laboratory, Trieste

With the recent availability of femtosecond x-ray pulses at free-electron laser (FEL) facilities, an insight into a new regime of laser-matter interaction has become feasible. Ultrashort and intense pulses allow for novel kind of experiments, as for example to study the structure and dynamics in gas-phase nanoparticles with x-ray imaging. In particular, helium nanodroplets are very interesting targets. On one hand, they have a simple electronic and geometric structure, on the other hand they are superfluid and can serve as an ultracold nanolaboratory for embedding atoms and molecules and growth studies. This talk will report on a pump-probe experiment using resonant XUV imaging of single helium nanodroplets with the FERMI FEL. The droplets were doped with xenon atoms and a plasma is ignited with a high power optical laser pulse. Using the single particle imaging technique we could follow the nanoplasma propagation and destruction of the droplet from fs to hundreds of ps after IR excitation.