Dear Shaofeng, You really do need to fit to know for sure. Aside from changes in bond length, there are many other effects that can shift a peak.
—Scott Calvin Sarah Lawrence College On Nov 4, 2015, at 7:29 AM, Shaofeng Wang <wangshaof...@iae.ac.cn<mailto:wangshaof...@iae.ac.cn>> wrote: Dear all experts, I am processing two As K edge EXAFS data shown as following figure. The first shell is As-O. The difference of the As-O peak btween sample As1 and As2 is around 0.03A. Does this represent that the average As-O bond length of sample As1 should be around 0.03 A longer than that of sample As2? Or this depends on fitting results ? Any help is very appreciated. <image[3].png> Cheers, Shaofeng -------------------------------------- Shaofeng Wang, Ph.D of Geochemistry Environmental Molecular Science Group Institute of Applied Ecology, Chinese Academy of Sciences Shenyang, 110016, China wangshaof...@iae.ac.cn<mailto:wangshaof...@iae.ac.cn> www.iae.cas.cn<http://www.iae.cas.cn> _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov<mailto:Ifeffit@millenia.cars.aps.anl.gov> http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
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