Measurement of L3 subshell fluorescence yields of some elements in the atomic range 57less-than-or-equals, slantZless-than-or-equals, slant68 using photoionisation

L3 X-ray production cross sections have been measured for the elements in the atomic range 57less-than-or-equals, slantZless-than-or-equals, slant68 at 59.5 keV. The values of L3 subshell fluorescence yields (ω3) have been measured for the same elements using the presently measured cross section values and the theoretical Li subshell photoionisation cross sections, Coster–Kronig transition probabilities, emission rates and vacancy transfer probabilities. The measured X-ray production cross section values are in general agreement with the theoretical values evaluated using L3 subshell fluorescence yields, Coster–Kronig transition probabilities, emission rates, vacancy transfer probabilities and subshell photoionisation cross sections. Furthermore, the values of L3 subshell fluorescence yields are in good agreement with the theoretical values.