Query: abnormal FT-EXAFS peak at ~1.1A
Hello! I faced an issue with fitting of FT-EXAFS data (Rh@zeolite) with Artemis. There is one distinct peak located at ~1.1 angstron. The intensity is comparable to the nearby peak of Rh-O scattering. I wonder the peak (~1.1A) is a real peak or just noise. Raw data is enclosed. Another question is why S02 can be negative in data fitting with Artemis. Cheers, Huaming
Hi Huaming Your oxide peak can extend to both sides so lower end peak may be from Rh-O unless you have any other scatterings (such as Rh-C, Rh-H). I also looked at your athena data, it is not calibrated and background was not good. You have -10.8 energy shift after calibration. I tried to fit it with Artemis and I didn't get negative value for S02 (). You can send me email if you have any questions (mjabra1@iastate.edu). https://www.nature.com/articles/s41467-021-25061-0 Best Maharram
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