title: Separation of two-electron photoexcited atomic processes near the inner-shell threshold.
abstract: By means of a high resolution resonant inelastic x-ray scattering spectroscopy, we have for the first time separated spectral features pertaining to different two-electron atomic processes in the vicinity of an inner-shell threshold. Contributions of shakeoff, shakeup, and resonant 1s3p double excitations were extracted from the Ar KM-M{2,3}M x-ray satellite line intensity measured as a function of photon energy from [1s3p] double excitation threshold to saturation. The isolated [1s3p]nln'l' excitation spectrum is critically compared to the outcome of the multiconfiguration Dirac-Fock model with relaxation.
authors.affiliation: J. Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia.
authors.forename: M
authors.initials: M
authors.lastname: Kavcic
authors.forename: M
authors.initials: M
authors.lastname: Zitnik
authors.forename: K
authors.initials: K
authors.lastname: Bucar
authors.forename: A
authors.initials: A
authors.lastname: Mihelic
authors.forename: M
authors.initials: M
authors.lastname: Stuhec
authors.forename: J
authors.initials: J
authors.lastname: Szlachetko
authors.forename: W
authors.initials: W
authors.lastname: Cao
authors.forename: R
authors.initials: R
authors.lastname: Alonso Mori
authors.forename: P
authors.initials: P
authors.lastname: Glatzel