Role of Inelastic Effects in EXAFS
The validity of the modern short-range-order theory of EXAFS (extended x-ray absorption fine structure) is largely a result of inelastic processes which give an energetic photoelectron a short mean free path. The need for including inelastic damping effects in calculations of EXAFS spectra x(k) is graphically illustrated by a comparison of typical results  of one-electron theory and experiment  (Fig.1).
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