Heidelberg 2015 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 20: Interaction with strong or short laser pulses II

A 20.3: Vortrag

Mittwoch, 25. März 2015, 11:45–12:00, C/HSW

Differential spectra for dissociative ionization of H2+ — •Volker Mosert and Dieter Bauer — Institut für Physik, Universität Rostock, 18051 Rostock

We compute and analyze correlated spectra for the dissociative ionization (DI) of the H2+ molecular ion using the tSURFF method. A low dimensional model of H2+ allows us too treat both nuclear and electronic degree of freedom exactly. In our TDSE simulations the molecular ion interacts with intense short laser pulses in the near IR regime. We find a pronounced modulation in the DI yield with respect to the kinetic energy of the protons. This modulation is almost independent of the electronic energy and could - erroneously - be attributed to vibrational excitations. However, by comparison with calculations for fixed internuclear distances the modulation can be traced back to an electronic interference effect that depends on the ionization potential.

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DPG-Physik > DPG-Verhandlungen > 2015 > Heidelberg