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MO: Fachverband Molekülphysik

MO 5: MO Poster 1

MO 5.4: Poster

Montag, 9. März 2020, 17:00–19:00, Empore Lichthof

Attosecond pulse induced ionization dynamics in a molecular charge-transfer system with correlated electrons — •Karl Michael Ziems^1,2, Friedrich Georg Fröbel¹, Stefanie Gräfe^1,2, and Alexander Schubert¹ — ¹Institute of Physical Chemistry, Friedrich-Schiller-University Jena, Germany — ²Max Planck School of Photonics, Germany

The attosecond ultrafast ionization dynamics of correlated two- or many-electron systems have, so far, been mainly addressed investigating atomic systems. In the case of single ionization, it is well known that electron- electron correlation modifies the ionization dynamics and observables beyond the single active electron picture, resulting in effects such as the Auger effect or shake-up and knock up processes. Here, we extend these works by investigating the attosecond ionization of a molecular system involving the correlated two-electron dynamics, as well as the non-adiabatic nuclear dynamics. We demonstrate, employing a charge-transfer molecular model system, how elastic and inelastic correlation-driven processes can be observed. As the model system investigated here involves two differently bound electrons, a stronger and a weaker bound electron, we can distinguish different pathways leading to ionization, be it direct ionization or ionization involving elastic and inelastic electron scattering processes. We find that different pathways result in a difference in the electronic population of the parent molecular ion, which, in turn, involves different subsequent (non-adiabatic) vibrational dynamics.