Two-photon double ionization of helium: investigating the importance of correlation in the final state

Aleksander Simonsen, Sigurd Askeland, Morten Førre
2013 Open Physics  
AbstractIn this paper, we present theoretical results for the process of non-sequential two-photon double ionization of helium at the photon energy 42 eV. Our approach is based on solving the time-dependent Schrödinger equation in a B-spline based numerical framework. Information about the process is obtained by extracting the double-ionized component by means of uncorrelated final states. The total (generalized) cross section for the process is extracted, as well as differential cross sections
more » ... tial cross sections resolved in electron energies and ejection angles. We focus on the impact the final-state correlation has on the accuracy of the cross sections.
doi:10.2478/s11534-013-0180-x fatcat:zzfux7azjrg3nomdx7xnlstsp4