title: Mechanisms of spontaneous two-electron emission from core-excited states of molecular CO.
abstract: We demonstrate that the observation of slow electrons emitted in the decay of molecular core-excited states can be a sensitive probe of the double Auger processes, and that in combination with electron-electron coincidence spectroscopy, it can provide clear insight into the mechanisms involved. The present study identifies all cascade Auger paths from the C1s-to-Rydberg states in CO to final states of CO2+. One pathway includes the first directly identified case of molecular level-to-level autoionization of a cation and shows remarkable selectivity for a specific final state.
authors.affiliation: UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kaneyasu
authors.forename: Y
authors.initials: Y
authors.lastname: Hikosaka
authors.forename: P
authors.initials: P
authors.lastname: Lablanquie
authors.forename: F
authors.initials: F
authors.lastname: Penent
authors.forename: L
authors.initials: L
authors.lastname: Andric
authors.forename: G
authors.initials: G
authors.lastname: Gamblin
authors.forename: J H D
authors.initials: JH
authors.lastname: Eland
authors.forename: Y
authors.initials: Y
authors.lastname: Tamenori
authors.forename: T
authors.initials: T
authors.lastname: Matsushita
authors.forename: E
authors.initials: E
authors.lastname: Shigemasa