L subshell fluorescence cross-sections and relative intensity ratios of some elements in the atomic range 72⩽Z⩽92

The Lα1,2, Lγ1, Lγ2,3,6,8, Lγ4,4′ and Lγ5 X-ray fluorescence cross-sections for some elements in the atomic range 72⩽Z⩽92 were measured at 59.54 keV. L subshell fluorescence cross-sections (σL1, σL2 and σL3) and relative intensity ratios (σL1/σL2, σL1/σL3 and σL2/σL3) were determined by using these experimental results. In addition, these cross-sections and relative intensity ratios were calculated theoretically. These experimental and theoretical relative intensity ratios were compared with each other and a fairly good agreement between these experimental and theoretical results were found. Besides, our results for L subshell fluorescence cross-sections were compared with the values of Şahin et al. (J. Phys. B 33 (2000) 93). Good agreement between these values was found for σL3, but there is no agreement for σL1 and σL2.