Measurements of Coster-Kronig enhancement factors for 69Tm

▶ In this study, X-ray fluorescence cross-sections (σLi, i = α, β, ℓ, γ) of the Tm element were measured at excitation energies of each Li (i = 1, 2 and 3) subshells, which has not been introduced to the literature before. ▶ Absolute values of L X-ray cross-sections were calculated with incorporation of the enhancement due to the Coster-Kronig effect for Tm. ▶ The results were compared with previous results from experimental and theoretical studies.