“…It is known (see, e.g., [65]) that intensities of the KL 1 M 2,3 , KL 2 M 2,3 , and KL 3 M 2,3 Auger transitions are very sensitive to the coupling of angular momenta used in the calculations. Because the calculations [2, 5, this work] differ in considering the relativistic effects, we followed a recommendation [64] and compared theoretical and experimental values for the KL 3 M 2,3 /KL 2 M 2,3 transition intensity ratio in order to investigate the spin-orbit coupling effect on the rubidium KLM Auger electron spectrum. It was shown in [64] that while the KL 2,3 M 2,3 transition intensities are negligibly influenced by the relativistic effects, the KL 3 M 2,3 /KL 2 M 2,3 transition intensity ratio is very sensitive to the coupling type.…”