A THEORETICAL-STUDY OF THE KLV AUGER TRANSITIONS OF MG IN LIMG, MG AND ALMG ALLOYS

It is shown that the influence of the local environment on the KLV Auger spectra of Mg can be understood via a theoretical approach which uses the embedding technique to calculate the local density of states around a core-ionized Mg site. This approach is applied to Al85Mg15, Mg100 and Li85Mg15 and, providing matrix element effects are included, the results obtained are in good agreement with measurements of the KL1V Auger profiles for these materials. The approach is less successful for the Mg KL2,3V transitions. The theoretical study predicts the formation of a bound state of s character on the Mg site in Li85Mg15 and this is supported by the good agreement obtained between theoretical and experimental KL1V Auger lineshapes.