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

[Matthew Marcus]

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

Sincerely,
   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 mailto:rajr...@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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Re: [Ifeffit] Bump/oscillating pattern at high energies of EXAFS

[Anatoly Frenkel]

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

[Raj kumar]

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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