Abstract
We have to know, in advance of the EXAFS data analysis, both backscattering amplitude and total phase shift, fπ and φ, which appear in an approximate EXAFS function. These physical parameters are theoretically or experimentally derived but are strongly dependent on the analysis methods. The theoretical fπ and φ are heavily distorted, especially for heavy backscatterers, after the Fourier filtering. It is proposed that we should use the distorted theoretical parameters for the analysis and select a weighting function carefully in order to reduce truncation errors in the Fourier filtering.
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