Determination of theKL2→L3X-Ray Multiplet Structure in Na, Mg, and Al

The energies and intensities of KL 2 → L 3 X-ray satellite multiplet lines are determined from high-resolution measurements of metallic samples. The spectra are interpreted in terms of six multiplet transitions arising from 1 s -1 2 p -2 → 2 p -3 transitions. Lines including 2 s holes are shown to be weak. The relative intensities of the electron excited KL 2 multiplets show marked deviations from the statistical population of initial states in contrast to the KL multiplets.