Hannover 2013 – scientific programme
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MO: Fachverband Molekülphysik
MO 19: Poster 2: Biomolecules, Cold Molecules, Experimental Techniques, Various Topics
MO 19.31: Poster
Wednesday, March 20, 2013, 16:00–18:30, Empore Lichthof
Evidence of emitter site oscillations in dissociating core-excited oxygen molecules — •Toralf Lischke1, Burkhard Langer2, Rainer Hentges3,7, Markus Braune4, Sanja Korica3, Daniel Rolles4, Andre Meissner3, Gregor Hartmann1, Ralph Püttner5, Markus Ilchen4, Oliver Kugeler6, Andre Knie7, Jens Viefhaus4, Arno Ehresmann7, Omar Al-Dossary8,9, and Uwe Becker1,3,8 — 1Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany — 2Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany — 3Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany — 4HASYLAB at DESY, Notkestraße 85, 22603 Hamburg, Germany — 5Institut für Experimentalphysik, Freie Universität Berlin, Arminallee 14, 14195 Berlin, Germany — 6Helmholtz Zentrum Berlin, BESSY II, Albert-Einstein-Str. 15, 12489 Berlin, Germany — 7Institut für Physik, Universität Kassel Heinrich-Plett-Str. 40, 34132 Kassel, Germany — 8Department of Physics, College of Science King Saud University, Saudi Arabia — 9National Center for Mathematics and Physics, KACST, Saudi Arabia
For localized electron emitter sites of inversion symmetric homonuclear diatomic molecules it is assumed that they oscillate with a frequency proportional to the energy splitting of their gerade and ungerade parity eigenstates. This behavior we proofed in an electron-ion coincidence experiment with Doppler-shifted Auger electrons emitted for the dissociating core-excited O2 molecules in the region of the σu* shape resonance below the O2 K-shell edge at 539.4 eV.