Experimental determination of tantalum L-shell fluorescence yields and Coster-Kronig transition probabilities

Abstract

Using radiometrically calibrated instrumentation of Physikalisch-Technische Bundesanstalt, the L-shell fluorescence yields and Coster-Kronig factors of tantalum (including the uncertainty budget) were experimentally determined based on transmission and X-ray fluorescence experiments. The determined fluorescence yields (${\omega }_{L3}=0.247(12)$, ${\omega }_{L2}=0.278(15)$, ${\omega }_{L1}=0.157(12)$) were independently validated trough XRR-GIXRF experiments. Both, the Coster-Kronig factors ($f_{23}=0.123(84)$, $f_{13}=0.328(152)$, $f_{12}=0.14(11)$) as well as the fluorescence yields are in good agreement with the most established databases in the field of X-ray fluorescence.