Electron correlation effects in the double ionization of He

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

The double-ionization yield of He is calculated with a one-dimensional fully correlated two-electron model for the low laser frequency of recent experiments. Results for a higher laser frequency also indicate a comparable very high double-ionization yield for sufficiently short pulses. It is shown that the Hartree-Fock approximation fails dramatically in describing the two-electron dynamics. Also, in a density functional theory approach, we demonstrate the need for an improved exchange correlation potential and for more accurate density functionals for the ionization probabilities.

Detaljer

Författare
  • D. G Lappas
  • R van Leeuwen
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Atom- och molekylfysik och optik
Originalspråkengelska
TidskriftJournal of Physics B: Atomic, Molecular and Optical Physics
Volym31
Utgåva nummer6
StatusPublished - 1998
PublikationskategoriForskning
Peer review utfördJa
Externt publiceradJa

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