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Determination of the KL2 → L3 X-Ray Multiplet Structure in Na, Mg, and Al

The energies and intensities of KL2 → L3 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 KL2 multiplets show marked deviations from the statistical population of initial states in contrast to the KL multiplets.