Heidelberg 2015 – scientific programme
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A: Fachverband Atomphysik
A 8: Poster: Photoionization
A 8.5: Poster
Monday, March 23, 2015, 17:00–19:00, C/Foyer
Numerical Simulations of Single and Double Photoionization of the Helium Dimer — •Hongcheng Ni1, Camilo Ruiz2, Reinhard Dörner3, and Andreas Becker4 — 1Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Straße 38, 01187 Dresden, Germany — 2Centro de Láseres Pulsados (CLPU), Edificio M3 Parque Científico C/ Adaja, s/n 37185 Villamayor, Spain — 3Institut für Kernphysik, J.W. Goethe Universität Frankfurt, Max-von-Laue-Straße 1, 60438 Frankfurt, Germany — 4JILA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA
We first study the double photoionization of the helium dimer, and the knockout mechanism is identified in the process. We further use the Hamiltonian reduction method to identify the role of the Coulomb interactions between the electrons and between the electrons and the nuclei for the primary as well as the knockout (secondary) electron in the processes.