Hallo everyone, I have data of an hydrated mineral (a standard material, with known crystallographic structure), where the nearest neighbors are hydrogen atoms at about 0.8 angs from the absorber. my question, if anybody has had similar problem, is how do I differentiate between noise and contribution from H scattering in my exafs data. If I want to, I can get to a stage where I have almost no intensify in the FT data at r<1. but I don't know if this is a better interpretation. the feff input file suggest strong scattering from H atoms and I wouldn't want to just ignore these paths in the fit. Any suggestions would be most appreciated. Yael