Abstract
A theoretical description is given of the 2p3p3p (=${\mathit{L}}_{2,3}$${\mathit{M}}_{2,3}$${\mathit{M}}_{2,3}$) resonant Auger spectra in ${\mathrm{CaF}}_{2}$. Using a charge-transfer multiplet analysis, it is shown that the 2p3p3p Auger spectra excited at the 2p x-ray absorption edge show a large variation if one scans through the edge and excites the different symmetry states. A detailed comparison is made with experiment. The origins of the symmetry effects on the resonance are analyzed and the full charge-transfer multiplet theory is approximated using crystal-field and atomic multiplet calculations. The analysis shows that the Auger spectra of ${\mathrm{CaF}}_{2}$ are dominated by the resonance channel, with little contribution of the normal Auger channel. The differences with other recently used analysis are discussed.
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