Erlangen 2022 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 8: Poster 1
MO 8.8: Poster
Dienstag, 15. März 2022, 16:30–18:30, P
Probing structural dynamics of molecules and clusters using XFEL pulses and synchrotron radiation — •Dimitris Koulentianos1,2, Nidin Vadassery1, Ludmila Schneider2, Hubertus Bromberger1, Sebastian Trippel1,3, and Jochen Küpper1,2,3 — 1Center for Free Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Hamburg — 2Department of Physics, Universität Hamburg — 3Center for Ultrafast Imaging, Universität Hamburg
The development of x-ray free-electron laser (XFEL) and third generation synchrotron-radiation (SR) facilities, allowed for the study of molecular dynamics within the (sub)picosecond timescale [1]. In the present work, preliminary results using such light sources will be presented. Here, we will discuss both, delay-dependent hydrogen bond changes upon irradiation of the indole-water1 cluster, using a UV-pump x-ray-probe scheme offered by the Linac Coherent Light Source (LCLS), as well as the recording of molecular frame photoelectron angular distributions (MFPADs), using SR at PETRA III. Finally, our Timepix 3D camera [2] is expected to play a significant role in such experiments, as it allows us to obtain three dimensional ion velocities and to measure simultaneously all the ejected electrons and ions. First results demonstrating its capabilities, using nitrogen as target species [2], will be presented.
[1] Kierspel et al., Phys. Chem. Chem. Phys. 20, 20205 (2018)
[2] Bromberger et al., arXiv:2111.14407