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SYHD: Symposium Molecules in Helium Droplets

SYHD 1: Molecules in Helium Droplets

SYHD 1.2: Invited Talk

Wednesday, March 8, 2023, 11:30–12:00, E415

Coherent Diffraction Imaging of isolated helium nanodroplets and their ultrafast dynamics — •Daniela Rupp — ETH Zurich

Isolated helium nanodroplets are used as ideal model systems for exploring light-matter interaction and provide fascinating possibilities to embed dopant atoms or molecules and study their arrangement and properties at ultracold temperatures. Via single-pulse single-particle coherent diffractive imaging (CDI) with the intense femtosecond pulses from short-wavelength free electron lasers (X-FELs) and high-harmonic generation (HHG) sources, it is possible to study single specimen in free flight. The elastically scattered photons form an interference pattern, encoding the particle's structure and the light-induced dynamics during and after pulsed laser excitation. In this presentation, an overview on the young and thriving field of helium nanodroplets in intense short-wavelength pulses will be given and recent results on their ultrafast changes in the electronic and geometric structure will be discussed.