Determination of the KL ²→L ³ X-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 1s ^-12p ^-2→ 2p ^-3 transitions. Lines including 2s 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.