Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 43: Poster II
Q 43.39: Poster
Mittwoch, 20. März 2013, 16:00–18:30, Empore Lichthof
Ion Momentum Distributions from Strong-field Ionization of Atomic Ions using Linear and Elliptical Polarized Laser Light — •P. Wustelt1, M. Möller1,2, T. Rathje1,2, D. Hoff1,2, S. Trotsenko2,3, Th. Stöhlker1,2,3, A.M Sayler1,2, and G.G. Paulus1,2 — 1Institute of Optics and Quantum Electronics Friedrich Schiller University Jena Germany — 2Helmholtz Institute Jena, Germany — 3GSI, Darmstadt, Germany
We investigate the multi-electron dynamics in strong field ionization with linear and elliptical polarized laser light. In contrast to linear polarization, for elliptically polarized many-cycle pulses, the final ion momentum distribution provides complete information on the ionization field strength as well as the ionization time. Elliptical polarization also allows one to suppress non-sequential ionization and determine the release times for subsequent ionizations, thereby probing electron correlation mechanisms not predicted by semi-classical tunneling models of sequential ionization. Moreover, starting from different initial charge states of the same atom allows us to isolate the effects of each ionization step. Here we present measurements of strong-field ionization of atomic ion beam targets (He+, Nen+, Arn+, Xen+). The photoionized nuclei from the fast, transversally cold ion beam are detected using a position- and time-sensitive detector, which measures the momentum distribution and separates the initial and final charge states in space and time. In order to gain theoretical insight into the ionization dynamics, classical trajectory Monte-Carlo simulations are performed.