Measurement of L shell X-ray fluorescence intensity ratios for some elements in the atomic number range of 66£Z£90 by photoionization of consecutive L-subshells

Abstract

The experimental measurements of Lα/Lβ, Lα/Lγ, Lα/Lι, Lι/Lβ, Lι/Lγ, Lβ/Lγ intensity ratios were determined for three different cases. In case 1, the excitation energy (E) is less than the binding energy of the L₂ subshell but sufficient to excite the L₃ subshell. In case 2, E is less than the binding energy of the L₁ subshell but sufficient to excite the L₂ subshell. In case 3, E is less than the binding energy of the K shell but sufficient to excite the L₁ subshell. The applied method relies on photoionization of consecutive subshells and detection of the resolved fluorescence. The relative intensities in 8 different elements with atomic number ranging from 66-90 at 15 different excitation energies in the interval 8.265-21.705 keV have been measured.