On experimental attenuation factors of the amplitude of the EXAFS oscillations in absorption, reflectivity and luminescence measurements

Abstract

1. Introduction.-EXAFS spectroscopy is being used to an increasing extent as a powerful structural tool for the determination of the local atomic arran- gement around a given X-ray absorbing centre.Accurate interatomic distances are indeed available from this technique, but it is often difficult to extract from the experimental spectra, reliable values of the coordination number N f or the mean relative dis- placement a' of the jth shell [1].Besides well known theoretical limitations in the analysis of the pheno-