An extraction algorithm for core-level excitations in non-resonant inelastic X-ray scattering spectra.
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.
Sternemann
H
H
Fakultät Physik/DELTA, Technische Universität Dortmund, Maria-Göppert-Mayer-Strasse 2, D-44221 Dortmund, Germany. henning.sternemann@uni-dortmund.de
Sternemann
C
C
Seidler
G T
GT
Fister
T T
TT
Sakko
A
A
Tolan
M
M