Darmstadt 2008 – scientific programme
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MO: Fachverband Molekülphysik
MO 6: Photochemie II
MO 6.4: Talk
Tuesday, March 11, 2008, 11:45–12:00, 3F
Molecular Ion Photodissociation at FLASH — •Brandon Jordon-Thaden1, Henrik B. Pedersen2, Simon M. Altevogt1, Oded Heber3, Lutz Lammich2, Michael Rappaport3, Dirk Schwalm1, Daniel Zajfman3, Joachim Ullrich1, Andreas Wolf1, Marko Förstel4, Toralf Lischke4, Uwe Hergenhahn4, Rolf Treusch5, Natalia Guerassimova5, and Michael Martins6 — 1Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany — 2Department of Physics and Astronomy, University of Aarhus, Aarhus, 8000, Denmark — 3Department of Particle Physics, Weizman Institute of Science, Rehovot, 76100, Israel — 4Max-Planck-Institut für Plasmaphysik, EURATOM Association, 85748 Garching, Germany — 5HASYLAB, DESY, 22607 Hamburg, Germany — 6Institut für Experimentalphysik, Universtität Hamburg, 22671 Hamburg, Germany
Using the novel intense vacuum-ultraviolet (VUV) photon source at the Free-electron LASer facility in Hamburg (FLASH), excited state photodissociation of the benchmark system HeH+ has recently been performed in a crossed beams setup (TIFF). A program on photofragmentation of water-based ions has been initiated beginning with H2O+ and H3O+ and progressing towards weakly bound water clusters (H2O)NLi+. FLASH in combination with the fast beam momentum fragment imaging system and a photoelectron spectrometer would offer insights on e.g. Electron Transfer Mediated Decay (ETMD) processes. We will describe novel experimental developments at TIFF and review efforts to produce intense beams of weakly bound water cluster ions.