Düsseldorf 2007 – scientific programme

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A: Fachverband Atomphysik

A 12: Poster I - Interaction with external fields

A 12.4: Poster

Tuesday, March 20, 2007, 16:30–18:30, Poster B

Photoelectron emission from two Rabi-coupled levels — •Mircea Girju and Dieter Bauer — Max-Planck-Institut für Kernphysik, Postfach 103980, 69029 Heidelberg

Photoelectron spectra for the strong field ionization from the Rabi-coupled 1s and 2p states in hydrogen are calculated. Comparisons between results obtained with an extended strong field approximation and the solution of the time dependent Schrödinger equation are presented for different numbers of cycles of the ionizing laser pulse, Rabi-field strengths, and for vanishing or partial overlap between the ionizing pulse and the Rabi field. As in some cases the ionization due to the latter may be kept low, agreement between the two methods is shown. For some ionizing- and Rabi-field strengths without overlap the 2p contribution to the ionization rate can be also observed.