Heidelberg 2015 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 21: Posters 4: Novelties in Molecular Physics
MO 21.12: Poster
Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer
Signatures of Interatomic-Coulombic-Decay in electron-impact ionization of argon dimers — •Thomas Pflüger1, Xueguang Ren1, and Alexander Dorn2 — 1Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig — 2Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg
After decades of investigation of the ionization dynamics of simple atoms and molecules in electron collision experiments, in recent years significant progress was being The investigation of small rare gas clusters presents a unique opportunity in atomic physics. In a sense they can be thought of as bridging the gap between sole constituents and macroscopic matter, while still being simple enough to be understood on a particle level. For example, interesting processes were discovered in dimers such as Interatomic-Coulombic-Decay (ICD), which have been found to occur on very short time scales with a high efficiency compared to other possible pathways.
We find signatures of ICD in the triply-charged final-state of Ar2, as well as interesting structure in the kinetic-energy-release spectrum of the doubly-charged final-state of Ar2 pointing towards two separate mechanisms: a fast and a delayed one. Furthermore, a significant amount of data for the dissociation of Ar3 → Ar2++Ar+ could be retrieved.
Electronic as well as ionic energy spectra and angular distributions will be presented.