Fluorescence cross‐sections for L shell x‐ray lines

Abstract

Abstract Absolute values of x‐ray fluorescence (XRF) cross‐sections for Lα lines have been calculated for all the elements with 47 ≤ Z ≤ 92 at two exciting energies corresponding to Ag and Te K x‐rays from 10 Cd and 125 I radioisotopes, respectively. The effect of hole transfer within L subshells is also included when calculating the cross‐sections. Experimental measurements were carried out for Lα, L 1 and L Total x‐ray fluorescence cross‐sections for some of the elements ranging from Ho to U using exciter sources of 109 Cd and 125 I. Average L shell fluorescence yields were also obtained using the measured values of total L shell x‐ray fluorescence cross‐sections and the theoretical values of photoelectric cross‐sections.