Hi Ke,
Unfortunately, it looks like your data is showing the classic symptoms of self-absorption . The white line for UO2 is fairly pronounced, and should look like the attached picture.
Not sure on the setup at 12-BM-B, but next time ask if you could collect both fluorescence and transmission data at the same time. It can really save your behind.
You can dilute in whatever low Z compound you’d like, I think things like SiO2 and boron nitride are common because of their low Z. Graphite might work also. Powder smears on tape are pretty common because you can fold/unfold to vary the amount of material in the beam. (though one can’t manipulate those at the beamline with a dispersible rad powder like UO2.)
Best,
Drew
From: Ke Yuan [mailto:keyuan@umich.edu]
Sent: Thursday, October 16, 2014 8:39 AM
To: ifeffit@millenia.cars.aps.anl.gov; Latta, Drew E
Subject: Re: XAFS Analysis using Ifeffit
Sorry here is the picture!
On Thu, Oct 16, 2014 at 9:37 AM, Ke Yuan
