Determination of some atomic parameters related to XRF and K shell oscillator strengths

Atomic parameters were determined using two different techniques. mass absorption coefficients, attenuation cross sections and photoelectric cross sections around the K edge, K shell photoelectric cross sections, K shell absorption jump ratios, absorption jump factors and oscillator strengths have been experimentally, K shell absorption edge energies for Cd, In, Sn, Sb, Te, La, Ce, Pr, Nd and Sm have been semi-empirically determined using the X-ray attenuation technique, which is first technique of these techniques. In the measurements, some elements in the atomic range 39≤ Z ≤68 have been excited using photons of 59,54 keV emitted from Am-241 annular source. The characteristic K X rays emitted from the elements counted with a Si(Li) detector having 4 mm active diameter and full with half maximum (FWHM) of 160 eV at 5,9 keV. The experimental values were compared with the theoretically calculated values and other experimental and theoretical values in the literature. K shell absorption jump ratios, absorption jump factors and oscillator strengths have been decreased with the increasing atomic number. K shell fluorescence cross-sections σ_Kα, σ_Kβ and σ_Ktotal, K shell fluorescence yields ω_K and I_Kβ⁄I_Kα intensity ratios for Cd, In, Sn, Sb, Te, La, Ce, Pr, Nd and Sm have been experimentally determined with a good geometry set-up using EDXRF technique, which is second technique of these techniques. Kα ve Kβ excitation factors have been experimentally determined from K shell fluorescence yields, I_Kβ⁄I_Kα intensity ratios and K shell absorption jump factors have been experimentally determined using the X-ray attenuation technique. The experimental values were compared with the theoretically calculated values and other experimental and theoretical values in the literature and it has been observed that the results are in good agreement with those in literature. K shell fluorescence cross sections, fluorescence yields, I_Kβ⁄I_Kα intensity ratios and Kα ve Kβ excitation factors have been increased with the increasing atomic number.