Erlangen 2022 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 4: X-ray FELs (joint session MO/A)

A 4.3: Vortrag

Montag, 14. März 2022, 14:30–14:45, MO-H5

Correlation fingerprints in the x-ray induced Coulomb explosion of iodopyridine — •Benoît Richard^{1, 2, 3}, Julia Schäfer^{1, 4}, Zoltan Jurek¹, Robin Santra^{1, 2, 3, 4}, and Ludger Inhester^{1, 2} — ¹Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany — ²The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany — ³Department of Physics, Universität Hamburg, Notkestr. 9-11, 22607 Hamburg, Germany — ⁴Department of Chemistry, Universität Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany

Coulomb explosion induced by XFEL radiation is a promising experimental tool to image individual molecules. However, the amount of information about the original molecule geometry that can be inferred from the measured final momenta of the produced ions is presently unknown. In particular, the data acquired by state of the art multi-coincidence measurement techniques contains information about correlations between the different measured ions, but how to exploit this extra information for geometry reconstruction is currently unclear. In this work we propose a first step in this direction. To this end we analyze simulation data for the x-ray induced Coulomb explosion of 2-iodopyridine and describe its fragmentation dynamics. Crucially, we show that a collision between two ions during the Coulomb explosion causes strong and possibly measurable correlations between their final momenta.