For most of the transitions of theK andL series x-ray spectra the ratio of the contributions of the competing multipoles, δ2, is independent of the radial matrix element in the non-relativistic limit. In the present paper calculations of δ2 are made in the non-relativistic limit which give the relative strengths of the two closely competing electric and magnetic multipoles. The dominant mode in the emission processes of the transitions in theK andL series x-ray spectra has been assigned on the basis of these calculations.
Volume 94, 2020
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