Berlin 2014 – scientific programme
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A: Fachverband Atomphysik
A 18: Interaction with strong or short laser pulses II
A 18.4: Talk
Tuesday, March 18, 2014, 15:00–15:15, BEBEL E34
Exact TDSE simulations of H2+ in intense laser fields — •Volker Mosert and Dieter Bauer — Institut für Physik, Universität Rostock, 18051 Rostock
We investigate ionization of the hydrogen molecular ion H2+ in intense laser fields, in particular the influence of the nuclear motion beyond Ehrenfest dynamics. Simulating molecules in intense laser fields on an ab initio-level is in general prohibitive because the time dependent Schrödinger equation (TDSE) for electrons and ions has to be solved. However, the problem of H2+ in a laser field polarized colinear to the internuclear distance can be reduced to three dimensions when the cylindrical symmetry is exploited. We discretize the problem on a non-equidistant cylindrical grid. A finite difference approximation of the Hamiltonian in conjunction with a Crank-Nicolson time propagator is used to solve the TDSE.