SAMOP 2021 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 9: Poster 2
MO 9.11: Poster
Freitag, 24. September 2021, 17:30–19:30, P
Statistical analysis of correlations in the x-ray induced Coulomb explosion of iodopyridine — Benoît Richard1, 2, 3, •Julia Schäfer1, 4, Zoltan Jurek1, Robin Santra1, 2, 3, 4, and Ludger Inhester1, 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 imaging is a promising experimental tool to study individual molecules. However, the amount of information about the original molecule that can be retrieve from the measured final momenta of the produced ions is unclear. In particular, little study have been made about how to exploit information about the correlations between the ion momenta that state-of-the art multi-coincidence techniques can acquire. In this work simulation data for the x-ray induced Coulomb explosion of 2-iodopyridine is analyzed and the involved fragmentation dynamics are described. It is found that particular final ion momenta show correlations that reflect a collision of two atoms during the explosion. Moreover covariances of the forces along the explosion can be utilized to simplify the description of the dynamics in reduced dimensionality using only four collective coordinates.