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Rostock 2019 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 16: Cluster I (joint session A/MO)

MO 16.1: Hauptvortrag

Mittwoch, 13. März 2019, 14:00–14:30, S HS 3 Physik

Imaging ultrafast dynamics in nanoparticles with resonant multicolor XUV pulsesL Hecht2, B Langbehn2, J Zimmermann1, J Jordan2, K Kolatzki1, N Monserud1, Y Ovcharenko3, M Sauppe1, B Schütte1, R Tanyag1, A Ulmer2, B Kruse4, K Sander4, C Peltz4, A Colombo5, A D’Elia6, M diFraia7, L Giannessi7, P Piseri5, O Plekan7, K Prince7, M Zangrando7, C Callegari7, MJJ Vrakking1, A Rouzée1, T Möller2, T Fennel2, and •D Rupp11MBI Berlin, Germany — 2TU Berlin, Germany — 3E-XFEL, Schenefeld, Germany — 4Uni Rostock, Germany — 5Uni Milano, Italy — 6Uni Trieste, Italy — 7Elettra, Trieste, Italy

Diffraction imaging with intense, coherent, short-wavelength light pulses is a unique method to determine the structure of individual nanometer-sized objects such as viruses or fragile superfluid helium nanodroplets. In addition, diffraction imaging can be also used as a probe for ultrafast electronic processes within the particle. As the photons are elastically scattered by the electrons bound to the particle, the scattering response will be altered if the particle’s electronic structure changes, with particularly strong effects at electronic resonances. In two experiments we employed this concept using extreme ultraviolet (XUV) multicolor pulses from an intense high-harmonic generation source and two-color pulses from the FERMI free-electron laser, respectively, to resonantly image helium nanodroplets and trace light induced excitation and ionization processes within them.

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