title: Double photoionization into double core-hole states in Xe.
abstract: Double photoionization (DPI) leading to double core-hole states of Xe2+ 4d(-2) has been studied using a magnetic bottle time-of-flight spectrometer. The assignments of the Xe2+ 4d(-2) states are confirmed by the Auger lines extracted from fourfold coincidences including two photoelectrons and two Auger electrons. It is estimated that the core-core DPI into Xe2+ 4d(-2) at a photon energy of 301.6 eV has a favored cross section of about 0.3 MB. The intense core-core DPI is due to mixing of the 4d(-2) continuum with the 4p single photoionization, which is manifested in the relative intensities of the Xe2+ 4d(-2) components.
authors.affiliation: UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585, Japan.
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: T
authors.initials: T
authors.lastname: Kaneyasu
authors.forename: E
authors.initials: E
authors.lastname: Shigemasa
authors.forename: J H D
authors.initials: JH
authors.lastname: Eland
authors.forename: T
authors.initials: T
authors.lastname: Aoto
authors.forename: K
authors.initials: K
authors.lastname: Ito