Dissertation / PhD Thesis

PUBDB-2024-06252

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Energy and Charge Transfer in Dimers and Trimers of Xenon

Lindenblatt, H. (Corresponding author)DESY* ; Moshammer, R. (Thesis advisor)Extern* ; Quint, W. (Thesis advisor)

2023
Heidelberg University Library

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Please use a persistent id in citations: urn:nbn:de:bsz:16-heidok-339654  doi:10.11588/HEIDOK.00033965

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 Xe$^{1+}$ / Xe$^{2+}$ and (84+-13) fs for trimers decaying into Xe$^{1+}/Xe^{1+}/Xe^{1+}$. The kinetic energy distributions yield clear evidence that Xe$_2^{2+}$ decays by a slow CT process after bond contraction and Xe$_3^{2+*}$ decays by ETMD(3) before the nuclei can move. Furthermore, we see signatures of frustrated ionisation in Xe$_2$ dimers.

Keyword(s): 530 Physics

Note: Dissertation, Heidelberg University, 2023

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G2 - FLASH (DESY) (POF4-6G2) (POF4-6G2)

Experiment(s):

1. FLASH2 Beamline FL26 (FLASH2)

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