Abstract
We report on ab initio calculations of two-photon, single- anddouble-electron ejection cross sections in helium, using multichannelwavefunctions constructed within the framework of discretized basesinvolving linear combinations of B-splines. Within the lowest non-vanishingorder of perturbation theory, two-photon double ionization, for photonenergies from 42.5 to 46.5 eV, is found to be about 10% that of singleionization. It is also found that electron correlation in the final statetends to lower the amount of double ionization in comparison topredictions involving incomplete or no correlation. The potential of theapproach in the context of further open problems is alsodiscussed.
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.
