Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 25: Interaction with strong or short laser pulses II
A 25.2: Vortrag
Mittwoch, 2. März 2016, 15:00–15:15, f107
Novel experimental approach for the detection of correlated ionization dynamics — •Philipp Wustelt1,2, Lukas Wolf1, Max Möller1,2, Tim Rathje1,2, A. Max Sayler1,2, and Gerhard G. Paulus1,2 — 1Institute of Optics and Quantum Electronics, Friedrich Schiller University Jena, Germany — 2Helmholtz Institute Jena, Germany
The investigation of correlated ionization dynamics in the photoionization process of atoms in intensive laser fields has been the subject of many experimental as well as theoretical studies and is still not fully understood. The identification of possible ionization delays associated with multielectron dynamics in the strong-field ionization is part of intensive discussions.
Here, we present a novel experimental approach to study the multiple ionization process in a systematic way by comparing the double ionization process and the two individual single ionization steps. To this end, the momentum distribution of the fragments after ionization of the same atomic species, but with different initial charge state are measured in the identical experimental apparatus and under the same experimental conditions. In order to exclude correlation induced by recollision we apply elliptically polarized laser fields. The observed momenta spectra of He/He+ and Ne/Ne+ are discussed and compared to classical simulations.