Abstract
The authors present a new fast spherical approximation (FSA) for the calculation of multiple-scattering contributions in X-ray absorption fine structure. The experimental XAFS spectra of the Re L3 edge in ReO3, W L3 edge in NaWO3 and the Mo K edge in MoO3 are analysed by the new approach. It is shown that the FSA gives good results for their description both in the high and low energy ranges.