Lisa, I think the issue you're seeing is most likely due to telling athena to fit the data between E0+199 and E0+200 with a constant. I'd recommend expanding that range some to give Athena a chance -- if there isn't any data between E=E0+199 and E0+200, Athena won't be able to figure out what the edge step should be. If you really want the edge step to be the value of pre-edge subtracted mu(E) at E=E0+200eV, you'll have to do that by hand.
--Matt _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
