Hello Ifeffit friends, It is my understanding that FEFF6 or equivalently FEFF7 are considered the standard for Extended X-ray Absorption Fine Structure Analysis. In my experience, FEFF8 is a dangerous tool for EXAFS analysis as it has the ability to produce results that differ significantly from FEFF6 or FEFF7. In the review of EXAFS manuscripts where FEFF8 is the tool of choice, what parameters should be reported to give the reader some confidence that the authors have not tweaked the code to cover-up some errors in the model(s). A Big Thanks Shelly Shelly Kelly Bldg 203 RM E113 Skelly@anl.gov Argonne National Laboratory 630-252-7376 9700 S Cass Ave www.mesg.anl.gov Argonne, IL 60439