Hannover 2013 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 19: Poster 2: Biomolecules, Cold Molecules, Experimental Techniques, Various Topics

MO 19.31: Poster

Mittwoch, 20. März 2013, 16:00–18:30, Empore Lichthof

Evidence of emitter site oscillations in dissociating core-excited oxygen molecules — •Toralf Lischke¹, Burkhard Langer², Rainer Hentges^3,7, Markus Braune⁴, Sanja Korica³, Daniel Rolles⁴, Andre Meissner³, Gregor Hartmann¹, Ralph Püttner⁵, Markus Ilchen⁴, Oliver Kugeler⁶, Andre Knie⁷, Jens Viefhaus⁴, Arno Ehresmann⁷, Omar Al-Dossary^8,9, and Uwe Becker^1,3,8 — 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 σ_u^* shape resonance below the O₂ K-shell edge at 539.4 eV.