Abstract
Single-photon, two-electron ionization of He is analysed, taking into accountelectron correlation using lowest-order perturbation theory and including allindividual electron angular momenta in the final two-electron continuum.Perturbative account of electron correlation in the final state, which describes theso-called TS-1 mechanism of double photoionization, combined with a variationalaccount of electron screening, is found to provide results for the triply differentialcross section at an excess energy of 20 eV that are in excellent agreement withboth absolute experimental data and results of non-perturbative calculations, forall kinematics of the process in which the TS-1 mechanism is expected todominate.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Physics B: Atomic, Molecular and Optical Physics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
