L-subshell fluorescence yields and Coster-Kronig transition probabilities with a reliable uncertainty budget for selected high- and medium-Z elements

摘要

Photon-in/photon-out experiments at thin specimens have been carried out to determineL-subshell fluorescencenyields as well as Coster-Kronig transition probabilities of Au, Pb, Mo, and Pd using radiometrically calibratedninstrumentation in the Physikalisch-Technische Bundesanstalt (PTB) laboratory at the electron storage ringnBESSY II in Berlin. An advanced approach was developed in order to derive the fluorescence line intensities bynmeans of line sets of each subshell that were corrected for self-absorption and broadened with experimentallyndetermined detector response functions. The respective photoelectric cross sections for each subshell werendetermined by means of transmission measurements of the same samples without any change in the experimentalnoperating condition. All values derived were compared to those of earlier works. A completely traceablenuncertainty budget is provided for the determined values.