Berlin 2001 – wissenschaftliches Programm
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A: Atomphysik
A 5: Posters Tuesday (Photoionisation, Multi Photon Processes)
A 5.8: Poster
Dienstag, 3. April 2001, 12:30–15:00, AT3
A New Setup for Electron-Electron and Electron-Ion TOF Coincidence Spectroscopy of Atoms and Molecules — •Jens Viefhaus1, Oliver Geßner1, Henrik Haak1, Rainer Hentges1, Daniel Rolles1, Georg Prümper1, Uwe Becker1, Burkhard Langer2, Oliver Kugeler3, and Uwe Hergenhahn3 — 1Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany — 2Max-Born-Institut, Berlin, Germany — 3Max-Planck-Institut für Plasmaphysik, Garching, Germany
A substantial amount of progress in the understanding of photoionisation properties of atoms and molecules has been achieved by testing the most sensitive predictions of theoretical descriptions with coincidence experiments. We have designed and built a new end station dedicated to angle resolved multi-coincidence photoionisation experiments of gas-phase targets. This will allow us to conduct highly resolved molecular photoelectron-Auger-electron coincidence studies and to investigate dichroic effects in the molecular photoionisation of fixed-in-space molecules. In addition, double photoionisation studies will allow for obtaining a complete picture on the involved three-body Coulomb problem. Future directions will be discussed in the light of recent measurements.