Energy and CKT dependence of proton induced L subshell X-ray intensity ratios in elements 57⩽Z⩽92

The dependence of L subshell X-ray intensity ratios on incident proton energy and the CK transitions has been investigated in elements 57⩽Z⩽92. The intensity ratio I(Lα)/I(Ll) neither shows variation with energy nor any dependence on the CK transitions. In general, the ratios I(Lα)/I(Lβ) and I(Lα)/I(Lγ), first increase with incident proton energy, attain a maximum value, then start decreasing and attain an almost constant value after a particular energy (ranging from about 4.6 MeV for La to 5.8 MeV for U). A comparison has been made among the intensity ratios evaluated using three different sets of parameters. A maximum difference of about 18% has been observed among the different values.