Electron correlation effects in the double ionization of He
(1998) In Journal of Physics B: Atomic, Molecular and Optical Physics 31(6).- 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.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2258694
- author
- Lappas, D. G and van Leeuwen, R
- publishing date
- 1998
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Physics B: Atomic, Molecular and Optical Physics
- volume
- 31
- issue
- 6
- publisher
- IOP Publishing
- external identifiers
-
- scopus:0032027921
- ISSN
- 0953-4075
- DOI
- 10.1088/0953-4075/31/6/001
- language
- English
- LU publication?
- no
- id
- 5f0b0bbe-db63-4b5b-ac51-f7bf2f5e038f (old id 2258694)
- date added to LUP
- 2016-04-04 09:31:46
- date last changed
- 2022-01-29 18:16:24
@article{5f0b0bbe-db63-4b5b-ac51-f7bf2f5e038f, 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.}}, author = {{Lappas, D. G and van Leeuwen, R}}, issn = {{0953-4075}}, language = {{eng}}, number = {{6}}, publisher = {{IOP Publishing}}, series = {{Journal of Physics B: Atomic, Molecular and Optical Physics}}, title = {{Electron correlation effects in the double ionization of He}}, url = {{https://lup.lub.lu.se/search/files/5348672/2297369.pdf}}, doi = {{10.1088/0953-4075/31/6/001}}, volume = {{31}}, year = {{1998}}, }