title: Resonant double excitation observed in the near-threshold evolution of the photoexcited F K alpha satellite intensity in NaF.
abstract: We present a precise measurement of the photoexcited F K alpha satellite intensity's evolution for NaF from [1s2p] double excitation threshold to saturation. A direct comparison between the observed evolution and the x-ray absorption spectrum was successfully made, and the contribution of multielectron transitions to the absorption spectrum was clearly resolved for the first time. A resonance-like feature observed in the near-threshold evolution is attributed to the [1s2p]3p(2) resonant double excitation as confirmed by calculations.
authors.affiliation: RIKEN, Harima Institute, 1-1-1 Kouto, Mikazuki, Sayo, Hyogo 679-5148, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Oura
authors.forename: T
authors.initials: T
authors.lastname: Mukoyama
authors.forename: M
authors.initials: M
authors.lastname: Taguchi
authors.forename: T
authors.initials: T
authors.lastname: Takeuchi
authors.forename: T
authors.initials: T
authors.lastname: Haruna
authors.forename: S
authors.initials: S
authors.lastname: Shin