Modeling of the energy spectra of individual steps of the L23 → M2,3M2,3 → M2,3VV → VVVV cascade chain in MnO

Model calculations of the energy spectra of individual steps of the Mn L-23 -> M2.3M2.3 -> M-2,M-3 VV -> VVVV Auger cascade of MnO are described and the results compared with the results of recent Auger-Auger coincidence measurements. The spectra are modeled in terms of multiple integrations over products of the valence band density of states (VB-DOS) and an energy conserving delta function which includes hole-hole interactions in its argument. The formalism has applications to spectra of Auger transitions occurring in the later stages of Auger decay in which there are valence holes in the intermediate state preceding the transition and results in a lineshape which is proportional to an energy shifted function comprised of N-i correlation and N-f - 1 convolution operations over VB-DOS's where Ni and Nf are the number of valence holes in the initial and final states, respectively. (c) 2007 Elsevier B.V. All rights reserved.