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Berlin 2005 – wissenschaftliches Programm

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MO: Molekülphysik

MO 44: Novel Spectroscopies

MO 44.2: Vortrag

Dienstag, 8. März 2005, 16:45–17:00, HU 2097

Signatures of orbital symmetry and alignment in strong-field ionization of molecules — •A. Jaroń-Becker1, A. Becker1, and F.H.M. Faisal21Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, 01187 Dresden — 2Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501 Bielefeld

Multiphoton ionization of molecules is studied using the strong-field S-matrix approach. Numerical calculations for the angular distribution and the energy spectrum of the photoelectron as well as the total ionization rates and yields in an intense linearly polarized laser pulse are performed. Results are obtained for molecules aligned along the polarization axis and for ensembles of molecules having a random orientation of the molecular axis with respect to the polarization direction. Signatures of the molecular geometry and the orbital symmetry are identified and discussed. Predictions of the present theory for the dependence of the total ionization rates and yields on the orientation of the molecule are compared with other theoretical models and recent experimental data.

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