[Ifeffit] Questions about fitting of EXAFS

Hi, Everyone, I have several detailed questions about EXAFS processing and fitting 1. Are there any physical meaning for DeltaE0 in the paths, why it should be less than 10eV 2. The cutting range of Kmax (FT transform parameters) has great effect on FTs of EXAFS, how do I know to use the best

[Ifeffit] Reference spectra for brookite, anatase, rutile, Amorphous TiO2 at Ti K-edge

Dear, I received some data at Ti K-edge to analyse. The spectra corresponds to samples which are different mixture of titania allotropes. I started to do standard EXAFS fitting, but it doesn't seem relevant in this case. Probably, an attempt to do linear combination fitting with brookite,