[Ifeffit] Bump/oscillating pattern at high energies of EXAFS

Matthew Marcus mamarcus at lbl.gov
Thu Nov 1 16:55:12 CDT 2018

Agreed.  The low frequency and high amplitude at the end is implausible as EXAFS.

    Matthew Marcus
> It is an effect of inhomogeneity of the sample, that is, the variation in the metal density throughout the X-ray beam footprint.
> Anatoly
> On Thu, Nov 1, 2018 at 5:34 PM Raj kumar <rajrk37 at gmail.com <mailto:rajrk37 at gmail.com>> wrote:
>     Dear All,
>     I have monitored the growth process of YbVO4 nanoparticles using EXAFS. Here, nanoparticles were synthesized in water medium. Both initial and final products (EXAFS) of the synthesis were measured using the continuous flow approach whereas the intermediate products were recorded, in the glass capillary, using the stopped flow. In the attached figure, you can find the same (all products). At high energies of EXAFS, both initial and final measurements show smooth behavior whereas the oscillating pattern/bump was observed for the intermediate states.
>     Here, my question is: Is the oscillating pattern appearing in the intermediate states due to the sedimentation/in-homogeneity of the product in the capillary or it is the characteristic of the synthesis?
>     With regards,
>     Raj
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