The experimental measurements of Lalpha/Lbeta, Lalpha/Lgamma, Lalpha/Lt, Lt/Lbeta, Lt/Lgamma, Lbeta/Lgamma intensity ratios were determined for three different cases. In case 1, the excitation energy (E) is less than the binding energy of the L-2 subshell but sufficient to excite the L-3 subshell. In case 2, E is less than the binding energy of the L-1 subshell but sufficient to excite the L-2 subshell. In case 3, E is less than the binding energy of the K shell but sufficient to excite the L-1 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.