title: An extraction algorithm for core-level excitations in non-resonant inelastic X-ray scattering spectra.
abstract: Non-resonant inelastic X-ray scattering of core electrons is a prominent tool for studying site-selective, i.e. momentum-transfer-dependent, shallow absorption edges of liquids and samples under extreme conditions. A bottleneck of the analysis of such spectra is the appropriate subtraction of the underlying background owing to valence and core electron excitations. This background exhibits a strong momentum-transfer dependence ranging from plasmon and particle-hole pair excitations to Compton scattering of core and valence electrons. In this work an algorithm to extract the absorption edges of interest from the superimposed background for a wide range of momentum transfers is presented and discussed for two examples, silicon and the compound silicondioxide.
authors.affiliation: Fakultät Physik/DELTA, Technische Universität Dortmund, Maria-Göppert-Mayer-Strasse 2, D-44221 Dortmund, Germany. henning.sternemann@uni-dortmund.de
authors.forename: H
authors.initials: H
authors.lastname: Sternemann
authors.forename: C
authors.initials: C
authors.lastname: Sternemann
authors.forename: G T
authors.initials: GT
authors.lastname: Seidler
authors.forename: T T
authors.initials: TT
authors.lastname: Fister
authors.forename: A
authors.initials: A
authors.lastname: Sakko
authors.forename: M
authors.initials: M
authors.lastname: Tolan