Hannover 2010 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 8: Poster I

A 8.12: Poster

Dienstag, 9. März 2010, 16:30–19:00, Lichthof

Resonant 2p X-ray Absorption Spectroscopy of Size Selected Calcium, Scandium, Nickel and Copper Clusters — •Felix Ameseder², Jochen Rittmann¹, Silvia Forin², Konstantin Hirsch², Christian Kasigkeit², Andreas Langenberg¹, Jürgen Probst², Marlene Vogel², Jörg Wittich², Vicente Zamudio-Bayer², Thomas Möller², Bernd von Issendorff³, and Tobias Lau¹ — ¹Helmholtz-Zentrum Berlin für Materialien und Energie, Institut für Methoden und Instrumentierung der Synchrotronstrahlung, Albert-Einstein-Str. 15, 12489 Berlin — ²Technische Universität Berlin, Institut für Optik und Atomare Physik, Hardenbergstr. 36, 10623 Berlin — ³Universität Freiburg, Fakultät für Physik, Stefan-Meier-Str. 21, 79104 Freiburg

Studies on the 3d transition metals in the past have revealed interesting phenomena, including a so-called ‘anomalous’ branching ratio of the early transition metal atoms and the development of the branching ratio from the atom to the bulk. Here we present the first resonant 2p-3d measurements of size selected calcium, early transition metals (Sc) and later transition metals (Ni, Cu). By means of resonant x-ray absorption spectroscopy on size selected clusters an insight into the development of the electronic structure of calcium (d⁰), scandium (d¹), nickel (d⁹) and copper (d¹⁰) clusters is obtained. A detailed discussion including a comparison between the early transition metal and calcium on the one hand and the late transition metals on the other hand will be given.