Abstract

L-shell X-ray production cross-sections have been measured for selected heavy elements with 70 ≤ Z ≤ 92 at 59.54 keV using a Si(Li) detector. The L-subshell X-ray fluorescence yields ω₁, ω₂ and ω₃ have been derived using the experimental L X-ray production cross-sections, theoretical L-subshell photoionization cross-sections, Coster–Kronig transition probabilities and fractional X-ray emission rates. The data obtained are compared with the literature experimental data, theoretical predictions based on Dirac–Hartree–Slater wave functions and semi-empirical compilations.