Andrew, You have the edge step > 90,000 for fluorescence. You may want to check your data columns and see you have read in proper If/I0 (not ln If/I0 or something else). Regards, Joo ________________________ JOO H. KANG, Ph.D. Analytical Sciences The Dow Chemical Company 1897 Building - Office E77 Midland, MI 48667 USA Phone: (989) 638-3862 Fax: (989) 638-6443 E-mail: jhkang@dow.com -----Original Message----- From: ifeffit-bounces@millenia.cars.aps.anl.gov [mailto:ifeffit-bounces@millenia.cars.aps.anl.gov] On Behalf Of Andrew Campos Sent: Wednesday, May 05, 2010 11:24 AM To: ifeffit@millenia.cars.aps.anl.gov Subject: [Ifeffit] Differences between fluorescence and transmission of thesame sample Dr. Ravel, Thanks so much for the link and the advice! I appreciate it greatly. I will advise my lab mates as such and may have to only use the fluorescence data if that is indeed the case. I also included the file where the lower temperature is included and you might come to the same conclusion. The samples that I ran were pre-sieved, and the ones included in the .prj file aren't so that should be pursued prior to running the experiment. If they crush the particle and sieve the sample, I think that we can be more certain that this is not the case. This was very helpful! Andrew