Optimized Compton fitting and modeling for light element determination in micro-X-ray fluorescence map datasets

Experimental determination of differential scattering coefficients for nickel by means of linearly polarized x-ray radiation

“…For all employed scattering angles, this correction is typically h ≈ 2%. Upper bounds on the uncertainties of these higher-order contributions are estimated based on previous works using XMI-MSIM [15,52,53].…”

“…Consequently, investigations of x-ray scattering radiation on a quantitative level were already established during the development of x-ray radiation analysis [7][8][9][10][11]. Applications based on incorporating scattering radiation intensities into an x-ray fluorescence analysis usually focus on gaining information on light matrix elements that emit no or insufficient x-ray fluorescence signals [12][13][14][15]. The acquisition of scattered x-ray radiation in the tender to hard x-ray range with modern energy-dispersive x-ray (EDX) detectors is straightforward.…”

Determination of Sr to Ca ratio in solid carbonate, fluoride, and nitrate samples using the fundamental parameters of EDXRF: experimental and empirical evaluation of non-destructive assays in light matrices

“…3:28 Â ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi bkg at ROI p sensitivity (16) where "bkg at ROI" refers the background counts in the region of interest and the "sensitivity" is the net count per unit amount of the respective analyte. The detection limits ranged from 5.6 to 47.5 mg for Sr and 214.9 to 623.6 mg for Ca as the weight ratio of SrCO 3 to CaCO 3 was varied from 0 to 25.…”

“…Sometimes the fundamental parameters may not have the necessary accuracy, as entailed by the analyses. 5,[14][15][16] To reduce the errors in XRF analyses, a well-established approach is to use the intensity ratios instead of the absolute intensity values. 5,10 However, this approach is limited to only samples in which all the constituents are amenable to XRF.…”

Operando Tracking of Solution-Phase Concentration Profiles in Li-Ion Battery Positive Electrodes Using X-ray Fluorescence

“…Li + is not directly observable by XRF as elements with Z < 11 have low-energy Kα emissions as well as a propensity for Auger electron emission. , To circumvent this shortfall, the electrolyte anions which contain heavier elements are tracked. The Li + concentration is obtained as solution-phase charge neutrality ensures (to the μM level) that the anionic and cationic concentrations are stoichiometrically equivalent in the bulk solution .…”