Double Core-Hole Generation in O_{2} Molecules Using an X-Ray Free-Electron Laser: Molecular-Frame Photoelectron Angular Distributions.
Journal
Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141
Informations de publication
Date de publication:
16 Oct 2020
16 Oct 2020
Historique:
received:
07
05
2020
accepted:
28
08
2020
entrez:
30
10
2020
pubmed:
31
10
2020
medline:
31
10
2020
Statut:
ppublish
Résumé
We report on a multiparticle coincidence experiment performed at the European X-ray Free-Electron Laser at the Small Quantum Systems instrument using a COLTRIMS reaction microscope. By measuring two ions and two electrons in coincidence, we investigate double core-hole generation in O_{2} molecules in the gas phase. Single-site and two-site double core holes have been identified and their molecular-frame electron angular distributions have been obtained for a breakup of the oxygen molecule into two doubly charged ions. The measured distributions are compared to results of calculations performed within the frozen- and relaxed-core Hartree-Fock approximations.
Identifiants
pubmed: 33124863
doi: 10.1103/PhysRevLett.125.163201
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM