Erlangen 2018 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 16: Molecules in Intense Laser Fields (joint session MO/A)
MO 16.4: Vortrag
Mittwoch, 7. März 2018, 15:00–15:15, PA 2.150
Fragmentation dynamics of HeH+ in intense ultrashort laser pulses — •Philipp Wustelt1,2, Florian Oppermann3, Lun Yue4, Max Möller1,2, A. Max Sayler1,2, Manfred Lein3, Stefanie Gräfe4, and Gerhard G. Paulus1,2 — 1Institute of Optics and Quantum Electronics, Friedrich-Schiller-University Jena, D-07743 Jena, Germany — 2Helmholtz Institute Jena, D-07743 Jena, Germany — 3Institut für Theoretische Physik, Leibniz Universität Hannover, Appelstraße 2, 30167 Hannover — 4Institute of Physical Chemistry, Friedrich-Schiller University-Jena, Helmholtzweg 4, D-07743 Jena, Germany
The helium hydride molecular ion, HeH+, is the simplest heteronuclear polar molecule and serves as a benchmark system for the investigation of multi-electron molecules and molecules with a permanent dipole. We specifically address the question: How does the permanent dipole of HeH+ affect the fragmentation dynamics in intense ultrashort laser pulses? We study the laser induced laser-induced fragmentation; including non-ionizing dissociation, single ionization and double ionization; of an ion beam of helium hydride and an isotopologue at various wavelengths and intensities. These results are interpreted using reduced dimensionality solutions to the time-dependent Schrödinger equation and with simulations based on Dressed surface hopping.