Modeling final-state interaction effects in inelastic X-ray scattering from solids: resonant and non-resonant

We present resonant inelastic X-ray scattering calculations that realistica lly incorporate intermediate-state electron-core hole interactions and fina l-state electron-valence hole interactions. Intermediate-state interactions primarily affect the total fluorescence yield, whereas final-state interac tions can change the relative strengths of spectral emission features. This is especially true in systems with strong valence-hole exciton effects. We also consider non-resonant excitation of core electrons. This work conside rs resonant scattering from B Is electrons in cubic boron nitride (cBN) and hexagonal boron nitride (hBN) and non-resonant scattering from Mg and O Is electrons in MgO, and compares theoretical results to experiment. (C) 2001 Elsevier Science B.V; All rights reserved.