Berlin 2014 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 6: Poster
MS 6.11: Poster
Mittwoch, 19. März 2014, 14:00–14:00, DO24 Foyer
New setup for studying correlation effects in poly-anionic metal clusters by photoelectron spectroscopy — •Madlen Müller1, Gerrit Marx1, Patrice Oelßner2, Josef Tiggesbäumker2, Robert Wolf3, Karl-Heinz Meiwes-Broer2, and Lutz Schweikhard2 — 1Ernst-Moritz-Arndt-Universität, Greifswald, Deutschland — 2Universität Rostock, Deutschland — 3Max-Planck-Institut für Kernphysik, Heidelberg, Deutschland
Photoelectron spectroscopy (PES) experiments open insight into the electronic structure of atomic clusters. In the case of multiply negatively charged clusters, electron affinities and Coulomb barriers of these species can be probed by varying the wavelength of the photo-detachment laser[1]. In addition, poly-anionic metal clusters serve as model systems for electron-correlation phenomena[2].
A setup is presented, which combines a Paul trap, used for cluster-size selection and poly-anion production by sequential electron attachment[3], with a magnetic-bottle time-of-flight electron spectrometer[1]. As a first test PES on mono- and di-anion fullerenes with ultraviolet nanosecond laser pulses has been performed. In the future the measurements will be extended to poly-anionic metal clusters in order to explore their electronic properties.
The project is part of the Collaborative Research Center (SFB) 652.
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