Düsseldorf 2007 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 9: Interaction with strong laser pulses II

A 9.1: Hauptvortrag

Dienstag, 20. März 2007, 14:00–14:30, 5M

Correlated electron dynamics in few-cycle pulses — •Andreas Becker — Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, D-01187 Dresden

Electron correlation consitutes a basic resource for the understanding of the dynamics of many-particle systems. Its relevance becomes particular obvious in the double ionization by intense Ti:sapphire laser radiation (for a review see e.g. [1]). We have recently analyzed the ionization of two-electron atoms [2] and molecules [3] using ab-initio simulations beyond the conventional one-dimensional approximation. In the model [2] the electron correlation is included in its full dimensionality, while the center-of-mass motion is restricted along the polarization axis. The analysis of the numerical results reveals two pathways of non-sequential double ionization, namely the emission of a highly correlated electron pair and the ionization of previously excited ions, which are both linked to the return of an initially singly ionized electron wave packet to the residual ion.
A.Becker et al., J. Phys. B 38 (2005) S753
C.Ruiz et al., Phys. Rev. Lett. 96 (2006) 053001
S.Baier et al., Phys. Rev. A 74 (2006) 033405