Hannover 2013 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 27: Poster 3: Collisions, Electronic Spectroscopy, Energy Transfer, Quantum Chemistry, Molecular Dynamics, Photochemistry, Spectroscopy in He-Droplets
MO 27.20: Poster
Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof
Experimental Proof of Resonant Auger Decay Driven Intermolecular Coulombic Decay — •Florian Trinter1, Markus S. Schöffler1,2, Hong-Keun Kim1, Felix Sturm1,2, Kyra Cole1, Nadine Neumann1, Arno Vredenborg1, Joshua Williams3, Irina Bocharova2, Renaud Guillemin4, Marc Simon4, Ali Belkacem2, Allen L. Landers3, Thorsten Weber2, Horst Schmidt-Böcking1, Reinhard Dörner1, and Till Jahnke1 — 1Institut für Kernphysik, Goethe-Universität Frankfurt am Main, Max-von-Laue-Str. 1, D-60438 Frankfurt, Germany — 2Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA — 3Physics Department, Auburn University, Auburn, Alabama 36849, USA — 4Laboratoire Chimie Physique Matière et Rayonnement, UPMC Université Paris 06, F-75005 Paris, France
The efficient interaction of X-rays with high-Z elements is an extensively explored and important topic in biomedical physics.
Here we show experimentally that resonant Auger induced Intermolecular Coulombic Decay (ICD) can indeed be observed in model systems of small nitrogen and carbon monoxide clusters and - as expected - produces low energy electrons. Furthermore our simple model systems are able to prove the efficiency of ICD: it occurs even before the individual molecule is able to undergo dissociation, i.e. on a timescale < 10 fs. Our findings therefore strongly support the idea of resonant Auger-ICD being a promising process to induce radiation damage at a specific site inside a high-Z-tagged cell.