Thickness inhomogeneity and fluorescence effects in EXAFS spectroscopy forpowder samples: solution of the inverse problem

For thin powder samples EXAFS spectra are often suffered from thickness inh omogeneity and for thick samples from fluorescence at energies above edge a bsorption. As a result EXAFS amplitude is decreased and information about t he coordination numbers is distorted. For correction of x-ray absorption sp ectra on inhomogeneity and fluorescence effects we propose a new method of solving an inverse problem. Model calculations are carried out. This method is applied to preliminary processing EXAFS spectra for Ni-Mn alloys.