In this study, L X-ray fluorescence (XRF) cross-sections of elements with atomic number 41 ≤ Z ≤ 49 were theoretically calculated according to different excitation energies. Also, the Coster-Kronig (CK) enhancement factors observed as a result of the effect of non-irradiated Coster-Kronig transitions on L X-ray fluorescence cross-sections were theoretically calculated at different excitation energies. The change of both L XRF fluorescence cross-sections and the Coster-Kronig enhancement factors against energy were examined. The results obtained were compared with the values in the literature.
K-shell X-ray production cross-section have been measured for Y element. Measurements have been carried out at 16.896 keV excitation energy using secondary source. K X-rays emitted by samples have been counted by a Si(Li) detector with 160 eV resolution at 5.9 keV. The values of K -shell fluorescence yield has been evaluated for Y element. The results obtained for fluorescence yield and K X-ray production cross-section has been compared with the theoretically calculated values and other available semiempirical fits values.
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