title: Reconstruction of confocal micro-X-ray fluorescence spectroscopy depth scans obtained with a laboratory setup.
abstract: Depth profiling with confocal micro-X-ray fluorescence spectroscopy (confocal micro-XRF) is a nondestructive analytical method for obtaining elemental depth profiles in the micrometer region. Up until now, the quantitative reconstruction of thicknesses and elemental concentration of stratified samples has been only possible with monochromatic, thus, synchrotron radiation. In this work, we present a new calibration and reconstruction procedure, which renders quantification in the laboratory feasible. The proposed model uses the approximation of an effective spot size of the optic in the excitation channel and relies on the calibration of the transmission of this lens beforehand. Calibration issues are discussed and validation measurements on thick multielement reference material and a stratified system are presented.
authors.affiliation: Technische Universität Berlin , 10623 Berlin, Germany.
authors.forename: Ioanna
authors.initials: I
authors.lastname: Mantouvalou
authors.forename: Timo
authors.initials: T
authors.lastname: Wolff
authors.forename: Christian
authors.initials: C
authors.lastname: Seim
authors.forename: Valentin
authors.initials: V
authors.lastname: Stoytschew
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Malzer
authors.forename: Birgit
authors.initials: B
authors.lastname: Kanngiesser