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Energy and Charge Transfer in Dimers and Trimers of Xenon

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Lindenblatt,  Hannes       
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Citation

Lindenblatt, H. (2023). Energy and Charge Transfer in Dimers and Trimers of Xenon. PhD Thesis, Ruprecht-Karls-Universität, Heidelberg.


Cite as: https://hdl.handle.net/21.11116/0000-000E-0234-5
Abstract
The goal of this thesis is the investigation of decay processes in innershell ionised xenon dimers and trimers. To this end, the small clusters were ionised using 100 eV photons from a Free-Electron Laser and the momenta of the created ion fragments and electrons were measured using the Reaction Microscope at FLASH2. Employing an XUV/XUV pump-probe scheme, the timescale to distribute energy or charge throughout the cluster following local excitation was determined to below (186±6) fs for dimers decaying into Xe1+ / Xe2+ and (84 ± 13) fs for trimers decaying into Xe1+ / Xe1+ / Xe1+. The kinetic energy distributions yield clear evidence that Xe22+ decays by a slow CT process after bond contraction and Xe32+* decays by ETMD(3) before the nuclei can move. Furthermore, we see signatures of frustrated ionisation in Xe2 dimers.