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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. Schöffler^1,2, Hong-Keun Kim¹, Felix Sturm^1,2, 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.