Kavčič, M. Žitnik, M. Bučar, K. Mihelič, A. Štuhec, M. Szlachetko, Jakub Cao, Wei Mori, R. Alonso Glatzel, P. 2009-04-06 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 1<i>s</i>3<i>p</i> double excitations were extracted from the Ar <i>K</i><i>M</i>-<i>M</i>_2,3<i>M</i> x-ray satellite line intensity measured as a function of photon energy from [1<i>s</i>3<i>p</i>] double excitation threshold to saturation. The isolated [1<i>s</i>3<i>p</i>]<i>n</i><i>l</i><i>n</i> ^′<i>l</i>^′ excitation spectrum is critically compared to the outcome of the multiconfiguration Dirac-Fock model with relaxation. application/pdf https://folia.unifr.ch/global/documents/301183 https://folia.unifr.ch/documents/301183/files/cao_stp.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.102.143001 info:eu-repo/semantics/openAccess License undefined Physical Review Letters. - 2009, vol. 102, no. 14, p. 143001 info:eu-repo/classification/udc/53 Separation of two-electron photoexcited atomic processes near the inner-shell threshold http://purl.org/coar/resource_type/c_6501