Darmstadt 2008 – scientific programme

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A: Fachverband Atomphysik

A 10: Posters: Atomic clusters

A 10.8: Poster

Tuesday, March 11, 2008, 16:30–18:30, Poster C3

Ionization of Argon dimers in intense laser fields — •Birte Ulrich, Lutz Foucar, Zenghu Chang, Horst Schmidt-Böcking, and Reinhard Dörner — Institut für Kernphysik, Universität Frankfurt, Deutschland

The ionization mechanisms of dimers with synchrotron radiation via Interatomic Coulombic Decay and Two-Step-1 have been well studied in the last view years. In this experiment we investigate the double ionization of Argon dimers in ultrashort (30 fs) intense laser pulses.The COLTRIMS-technique allows us to measure all charged particles with 4 Pi angle and high accuracy. Thus we are able to reconstruct the initial momenta and deduce the angular distribution of coincident Ar+ pairs. The first results will be presented for circular and linear polarization.