Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 26: Poster: Atomic systems in external fields

A 26.14: Poster

Mittwoch, 14. März 2012, 16:30–19:00, Poster.V

Monte-Carlo Simulation of Atomic and Molecular Fragmentation Processes in Reaction Microscopes. — •Philipp Cörlin, Arne Senftleben, Alexander Sperl, Michael Schönwald, Andreas Fischer, Robert Moshammer, and Joachim Ullrich — Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Deutschland

By reconstructing the trajectories of electrons and (molecular) ions in an electric and a magnetic field, reaction microscopes are used to measure the three dimensional momenta of the ionization products. In combination with ultra short laser pulses this allows one to image ultra-fast molecular dynamics.

In this work laser-induced ionization of atoms and Coulomb explosion of small molecules are simulated in order to determine appropriate operating parameters for reaction microscopes. This is done by analyzing simulated time-of-flight spectra as well as hit positions on the detectors for different sets of parameters.

Furthermore, characteristic time-of-flight spectra of Coulomb exploding polyatomic molecules are created in order to simplify the interpretation of experimental data.