High-resolutionLx-ray spectrum of In

The L x-ray spectrum of indium has been measured in fluorescence by using a double-crystal spectrometer. The relative energies, relative intensities, and the natural widths of the diagram lines are determined and compared to the theoretical calculations as well as x-ray photoemission spectroscopy data. The results show that the energies of transitions involving $L_1$, $M_2$,3, and $N_1$ shells are shifted 3–9 eV from the theoretical self-consistent-field energies. There also exists a discrepancy in the theoretical and experimental linewidths of these transitions. The cause of these effects is discussed.