Hannover 2020 – scientific programme
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A: Fachverband Atomphysik
A 6: Atomic clusters (joint session A/MO)
A 6.2: Invited Talk
Monday, March 9, 2020, 14:30–15:00, a320
Imaging anisotropic dynamics in superfluid helium nanodroplets — •B. Langbehn1, K. Sander2, Y. Ovcharenko1,3, C. Peltz2, A. Clark4, M. Coreno5, R. Cucini6, A. Demidovich6, M. Drabbels4, P. Finetti6, M. Di Fraia6,5, L. Giannessi6, C. Grazioli5, D. Iablonskyi7, A. C. LaForge8, T. Nishiyama9, V. Oliver Álvarez de Lara4, P. Piseri10, O. Plekan6, K. Ueda7, J. Zimmermann1,11, K. C. Prince6,12, F. Stienkemeier8, C. Callegari6,5, T. Fennel2,11, D. Rupp1,11,13, and T. Möller1 — 1TU Berlin — 2Univ. Rostock — 3European XFEL — 4EPFL Lausanne — 5ISM-CNR Trieste — 6Elettra-Sincrotrone Trieste — 7Tohoku Univ. Sendai — 8Univ. Freiburg — 9Kyoto Univ. — 10Univ. di Milano — 11MBI Berlin — 12Swinburne Univ. of Tech. — 13ETH Zürich
Intense short-wavelength light pulses from free-electron lasers (FELs) enable the study of the structure and dynamics of nanometer-sized particles in the gas phase using coherent diffraction imaging methods. In our experiment, we explored the light induced dynamics of xenon doped helium nanodroplets. We used intense near-infrared pulses to ignite a nanoplasma inside the droplets. After a variable time delay of up to 800 ps, we imaged the dynamics triggered by the nanoplasma using extreme ultraviolet pulses from the FERMI FEL. The recorded scattering patterns exhibit pronounced directionalities that can be attributed to anisotropic changes of the droplet surface. A possible connection of these directed dynamics to the droplet’s vortex structure will be discussed.