Currently I am learning the EXAFS fitting program ARTEMIS posted at your website. I have some doubt regarding the tuning of the path parameters for fitting. For example, If I am using feff0001.dat and feff0002.dat as two different paths in the fit and I want to tune the parameters corresponding to the above paths, then what syntax I have to use for the path parameters (e0, delR,sigma^2,N) in the section "GUESS,DEF,SET" so that it distinguishes different paths. Please explain to me with an example. Bindu

Bindu, This is a good sort of question to ask on the Ifeffit mailing list. http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit The advantage of using the mailing list is that you have access to lots of experts and lots of opinions. You'll find it to be a very useful resource. You question is answered in lots of different ways among things available on the web. If you have not yet looked over the tutorials at xafs.org (http://xafs.org/Tutorials), you should do so. You'll find lots of very helpful information. Shelly Kelly's analysis tutorial might be just what you are looking for. Scott Calvin's series of example explaining how to analyze ZnO using Artemis is quite useful. It is a tutorial in the form of Artemis projects. He uses the project journal space to explain what is going on at each stage of the analysis. http://cars9.uchicago.edu/iffwiki/HoraeSoftware#contrib You may find this talk by me helpful: http://cars9.uchicago.edu/~ravel/talks/Welcome.html#methyltin If, after reviewing all the material that available, you have specific questions, please do not hesitate to ask on the mailing list. I and the others on the list will be happy to try to answer. Regards, B -- Bruce Ravel ----------------------------------- bravel@bnl.gov National Institute of Standards and Technology Synchrotron Methods Group at Brookhaven National Laboratory Building 535A Upton NY, 11973 My homepage: http://cars9.uchicago.edu/~ravel EXAFS software: http://cars9.uchicago.edu/~ravel/software/exafs/