Hannover 2010 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 8: Poster I

A 8.20: Poster

Dienstag, 9. März 2010, 16:30–19:00, Lichthof

Complex atoms in strong laser fields: A multiconfigurational time-dependent Hartree-Fock approach — •David Hochstuhl and Michael Bonitz — ITAP, Christian-Albrechts Universität zu Kiel, 24098 Kiel

In the last decade simulations of real, three-dimensional complex atoms in strong laser fields became feasible within several methods, e.g. convergent close coupling, time-dependent density functional theory or R-matrix methods. Here we apply the multiconfigurational time-dependent Hartree-Fock method which is, in principle, able to yield exact, i.e. numerically converged results. For the treatment of the three dimensions, we employ an expansion in spherical harmonics times a radial function, which is expanded in a Coulomb-wave discrete variable representation. The main focus of this poster lies on the capabilities and performance of this scheme. Results are presented for photoionization of the helium atom and compared to convergent close coupling calculations. Further, the beryllium atom is considered.