Hi Rob,
Thank you for your answer. I am aware of this problem, however they want me to try anyway so I’ll do my best and hope to get at least to k=10.5 or something. Anyway, I have completely different question as well: I just started using Artemis, and have a question regarding the amplitude reduction factor: I use different So^2 for different elements, correct? If I start fitting and have paths involving the same kind of atom but once at distance 2A, and once maybe 3A, is this then the same So^2 or am I supposed to model the behaviour of So^2 somehow?
Similar for \Delta R: If I don’t have a nice simple cubic structure and can’t use isotropic expansion similar like alpha*R_eff, what would be a smart(or physically correct) way to connect \Delta R (as well as sigma^2) for the same element for different distances? The material I am looking at is Li2O2 and Li2IrO3, which don’t have a very simple structure.
I am aware that maybe I am asking a bit much, but if you could help me in any way I would be very delighted.
Best, Julian
Von: Ifeffit [mailto:ifeffit-bounces@millenia.cars.aps.anl.gov] Im Auftrag von Robert Meulenberg
Gesendet: Mittwoch, 9. Mai 2018 14:55
An: XAFS Analysis using Ifeffit
Dear all,
This might be a very general question, but: I was wondering what energy resolution you typically use at beamlines to obtain your raw data for exafs. Since we have limited Beamtime only and other experiments that we want to carry out, I was wondering what kind of resolution is common. Or differently: Is it predictable what happens if I for example change from steps of 0.2eV to 0.4eV? We want to obtain spectra up to 500eV above Oxygen K, if that is of relevance.
Best, Julian
-- Carlo U. Segre -- Duchossois Leadership Professor of Physics Interim Chair, Department of Chemistry Director, Center for Synchrotron Radiation Research and Instrumentation Illinois Institute of Technology Voice: 312.567.3498 Fax: 312.567.3494 segre@iit.edu mailto:segre@iit.edu http://phys.iit.edu/~segre segre@debian.org mailto:segre@debian.org _______________________________________________ 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 Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit _______________________________________________ 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 Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit