[Ifeffit] Sulfur EXAFS k oscillations

[Robert Gordon]

Large mono glitch around k ~ 13.8 A-1  (E~3200 eV) on 4-3   perhaps?

On 4/9/2018 11:04 AM, Miller, Elizabeth Christine wrote:
>
> Hi all,
>
> I am analyzing some sulfur K-edge EXAFS data taken at 4-3 at SSRL. 
> When I use a k-weight of k^3 to plot, my oscillations at high k reach 
> over 100, which doesn’t make sense to me. I have looked over the data 
> with Riti, and it seems that while the XANES are rather self-absorbed 
> due to high concentrations of sulfur-containing salt, the data can be 
> normalized, and the EXAFS should contain some information. I’ve 
> included screenshots in the attachment of plots of all of the 
> k-weights as well as my parameters. The mixtures are solutions of 
> organics (acetonitrile, 1,1,2,2-Tetrafluoroethyl 
> 2,2,3,3-tetrafluoropropyl ether) with bis(trifluoromethane)sulfonimide 
> lithium salt. I am also not hitting any other edges, as sulfur is the 
> highest Z element in the solution. Any thoughts would be greatly 
> appreciated!
>
> Thank you,
>
> Beth
>
> Elizabeth C. Miller, Ph.D.
>
> Postdoctoral Scholar
>
> Stanford Synchrotron Radiation Lightsource
>
> SLAC National Accelerator Laboratory
>
> E-mail: ecmiller at slac.stanford.edu <mailto:ecmiller at slac.stanford.edu>
>
>
>
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