Mainz 2017 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 39: Clusters III (with MO)

A 39.1: Hauptvortrag

Freitag, 10. März 2017, 14:30–15:00, N 3

Experimental studies of Interatomic Coulombic Decay — •Till Jahnke — Goethe Universität Frankfurt, Institut für Kernphysik, Max-von-Laue-Str. 1, 60438 Frankfurt

Interatomic (or intermolecular) Coulombic Decay (ICD) has become an extensively studied electronic decay process during the last 15 years. Originally proposed by Cederbaum et al. [1] it was experimentally identified by means of different techniques [2,3,4] in the early 2000s. In ICD an excited atom or molecule deexcites by transferring its excitation energy to a loosely bound atomic neighbor and leads to the emission of an electron at that neighbor. Since that time a wealth of experimental and theoretical studies have shown that ICD is a rather common decay path in nature, as it occurs ''almost everywhere'' in loosely bound matter.

The talk will give a short introduction on ICD and report on recent experimental advances in the field covering time-resolved studies on the cluster size dependence of the efficiency of the decay and more detailed studies of different decaying systems.

[1] Cederbaum, L. S., Zobeley, J., and Tarantelli, F., Phys. Rev. Lett., 79, 4778 (1997). [2] Marburger, S., Kugeler, O., Hergenhahn, U., and Möller, T., Phys. Rev. Lett., 93, 203401 (2003). [3] Jahnke, T., Czasch, A., Schöffler, M. S., Schössler, S., Knapp, A. Käsz, M., Titze, J., Wimmer, C., Kreidi, K., Grisenti, R. E., Staudte, A., Jagutzki, O., Hergenhahn, U., Schmidt-Böcking, H., and Dörner, R., Phys. Rev. Lett., 93, 163401 (2004). [4] G. Öhrwall et al., PRL 93 173401 (2004)