Abstract
One-photon $K{L}_{2,3}^{n}$ ($n=1,2$) radiative electron rearrangement ($K{L}^{n}$ RER) x-ray transitions have been observed in sodium, magnesium, and aluminum metals following electron-impact excitation. The structure of the $K{L}^{n}$ RER transitions has been separated from the $\mathrm{KLL}$ and $K{L}_{1}V$ radiative Auger (RA) structure and their intensity relative to the $K{L}_{2,3}^{n}\ensuremath{-}{L}_{2,3}^{n+1}$ transitions has been determined. No significant discrepancy between the experimental and calulated $K{L}^{1}$ RER branching ratios has been found in contrast to recent ion-impact results of Jamison et al. for aluminum and silicon. Our $K{L}^{2}$ RER results also agree with theoretical predictions.
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