EFFECTS OF MANY-BODY INTERACTIONS IN EXTENDED X-RAY ABSORPTION FINE STRUCTURE SPECTROSCOPY (EXAFS)

W. BARDYSZEWSKI, L. HEDIN
1987 Le Journal de Physique Colloques  
We present the first a priori derivation of a many-body theory for EXAFS with clearly defined approximations and with final expressions which are feasible for quantitative evaluations. We conclude that the conventional EXAFS expression should be complemented with a term that crudely is the main term, energy-shifted and scaled down by a factor of order 0.2-0.3. Further the f-factors depend significantly, not only on the scattering properties of the individual ions, but also on the electron
more » ... the electron energy-loss properties of the material itself.
doi:10.1051/jphyscol:19879199 fatcat:3bzbesnfgvhojiq22ixoyyytj4