Bruce,
SC> 4) Then there is the k-weight parameter to be changed for the SC> background removal....What are the criteria to choose this SC> k-weight for the background?
With noisy spectra, the high energy portion of the data might be dominated by fluctuations that have nothing to do with the exafs. In that case a large k-weight for the background removal might be unduly influenced by stuff that is not the data you want to analyze but instead are detector problems, sample inhomogeneity problems, gremlins, crap, whatever ;-)
so I conclude that I should use a LOW k-weight in my case, right? Stefano -- ____________________________________________ Stefano Ciurli Professor of Chemistry Department of Agro-Environmental Science and Technology University of Bologna Viale Giuseppe Fanin, 40 I-40127 Bologna Italy Phone: +39-051-209-6204 Fax: +39-051-209-6203 "Fatti non foste a viver come bruti, ma per seguir virtute e canoscenza" Dante Alighieri - Inferno - Canto XXVI