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MO: Molekülphysik

MO 12: Poster I

MO 12.20: Poster

Dienstag, 23. März 2004, 14:00–16:00, Schellingstr. 3

Direct Experimental Observation of Interatomic-Coulombic-Decay of Neon Dimers — •T. Jahnke¹, A. Czasch¹, M. Schöffler¹, S. Schößler¹, A. Knapp¹, M. Käsz¹, J. Titze¹, C. Wimmer¹, K. Kreidi¹, R. Grisenti², O. Jagutzki¹, U. Hergenhahn¹, H. Schmidt-Böcking¹ und R. Dörner¹ — ¹Institut für Kernphysik der J.W.Goethe Universität, August-Euler-Str. 6, 60486 Frankfurt am Main — ²Fritz-Haber-Institut, MPG Berlin

Using the COLTRIMS technique a direct experimental observation of the ”Interatomic-Coulombic-Decay” (ICD) of Neon dimers has been performed. A supersonic jet consisting of Neon atoms and small clusters is crossed with a beam of linearly polarized light. After 2s-photoionization of a Neon atom, an Auger decay of the atom is prohibited as the system does not provide enough energy for the emission of an electron. In contrast to that, for a Neon dimer an Auger decay is energetically possible, as predicted by Cederbaum et al.: ICD occurs - relaxation of the inner valance hole takes place as energy is transferred from the neighboring atom.