Rostock 2019 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 33: Interaction with strong and short laser pulses

A 33.7: Poster

Donnerstag, 14. März 2019, 16:15–18:15, S Fobau Physik

Photoelectron Momentum Distributions of Potassium from an Ultrashort Intense Laser Pulse — •Lutz Marder, Daniel M. Reich, and Christiane P. Koch — Institut für Physik, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel (Germany)

We present ab initio simulation results for the Photoelectron Momentum Distributions (PMDs) in potassium atoms obtained in experiments using highly intense linearly polarized femtosecond laser pulses. To model the potassium atom we use a single-active electron approach with a relativistic effective potential. The electronic wave function is represented by spherical harmonics and a radial spatial grid with a Finite Element Discrete Variable Representation (FE-DVR) using Gauß-Legendre-Lobatto (GLL) points. We compare our simulated PMDs with state-of-the-art experiments investigating interesting features observed in the Photoelectron Angular Distribuations (PADs) of potassium.