| Literature DB >> 12144390 |
A Knapp1, A Kheifets, I Bray, Th Weber, A L Landers, S Schössler, T Jahnke, J Nickles, S Kammer, O Jagutzki, L Ph H Schmidt, T Osipov, J Rösch, M H Prior, H Schmidt-Böcking, C L Cocke, R Dörner.
Abstract
We have measured fully differential cross sections for photo double ionization of helium 450 eV above the threshold. We have found an extremely asymmetric energy sharing between the photoelectrons and an angular asymmetry parameter beta approximately 2 and beta approximately 0 for the fast and slow electrons, respectively. The electron angular distributions show a dominance of the shakeoff for 2 eV electrons and clear evidence of an inelastic electron-electron scattering at an electron energy of 30 eV. The data are in excellent agreement with convergent close-coupling calculations.Entities:
Year: 2002 PMID： 12144390 DOI： 10.1103/PhysRevLett.89.033004
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161