Re: [Ifeffit] Ifeffit Digest, Vol 189, Issue 2

[Anatoly Frenkel]

If the sample is not homogeneous, it doesn’t matter if you use EXAFS or XANES 
spectra, they originate from the same atoms. 

Anatoly

> On Nov 2, 2018, at 2:39 AM, Raj kumar  wrote:
> 
> Dear Anatoly and Marcus,
> 
> Thanks for your answers. So in this case, i understood, I shouldn't use the 
> extended XAFS region for the analysis. In the other hand, is it allowed to 
> cut the region till 9150 eV and use the data for the XANES analysis?
> 
> Regards,
> Raj
> 
> 
>> On Thu, Nov 1, 2018 at 11:37 PM  
>> wrote:
>> Send Ifeffit mailing list submissions to
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>> 
>> Today's Topics:
>> 
>>1. Re: Bump/oscillating pattern at high energies of EXAFS
>>   (Anatoly Frenkel)
>>2. Re: Bump/oscillating pattern at high energies of EXAFS
>>   (Matthew Marcus)
>>3. EXAFS of wine (Anatoly Frenkel)
>> 
>> 
>> --
>> 
>> Message: 1
>> Date: Thu, 1 Nov 2018 17:47:56 -0400
>> From: Anatoly Frenkel 
>> To: XAFS Analysis using Ifeffit 
>> Subject: Re: [Ifeffit] Bump/oscillating pattern at high energies of
>> EXAFS
>> Message-ID:
>> 
>> Content-Type: text/plain; charset="utf-8"
>> 
>> 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
>> > ___
>> > Ifeffit mailing list
>> > 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
>> >
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>> 
>> Message: 2
>> Date: Thu, 1 Nov 2018 14:55:12 -0700
>> From: Matthew Marcus 
>> To: ifeffit@millenia.cars.aps.anl.gov
>> Subject: Re: [Ifeffit] Bump/oscillating pattern at high energies of
>> EXAFS
>> Message-ID: 
>> Content-Type: text/plain; charset=utf-8; format=flowed
>> 
>> 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 > > > 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
>> > ___
>> > Ifeffit mailing list
>> > Ifeffit@millenia.cars.aps.anl.gov 
>> 

Re: [Ifeffit] Ifeffit Digest, Vol 189, Issue 2

[Raj kumar]

Dear Anatoly and Marcus,

Thanks for your answers. So in this case, i understood, I shouldn't use the
extended XAFS region for the analysis. In the other hand, is it allowed to
cut the region till 9150 eV and use the data for the XANES analysis?

Regards,
Raj


On Thu, Nov 1, 2018 at 11:37 PM 
wrote:

> Send Ifeffit mailing list submissions to
> ifeffit@millenia.cars.aps.anl.gov
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
> or, via email, send a message with subject or body 'help' to
> ifeffit-requ...@millenia.cars.aps.anl.gov
>
> You can reach the person managing the list at
> ifeffit-ow...@millenia.cars.aps.anl.gov
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Ifeffit digest..."
>
>
> Today's Topics:
>
>1. Re: Bump/oscillating pattern at high energies of EXAFS
>   (Anatoly Frenkel)
>2. Re: Bump/oscillating pattern at high energies of EXAFS
>   (Matthew Marcus)
>3. EXAFS of wine (Anatoly Frenkel)
>
>
> --
>
> Message: 1
> Date: Thu, 1 Nov 2018 17:47:56 -0400
> From: Anatoly Frenkel 
> To: XAFS Analysis using Ifeffit 
> Subject: Re: [Ifeffit] Bump/oscillating pattern at high energies of
> EXAFS
> Message-ID:
> <
> cafsmozbm2rmvuermuoryw9ehvrzqcvx60zhqufmk39olroy...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> 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
> > ___
> > Ifeffit mailing list
> > 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
> >
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> http://millenia.cars.aps.anl.gov/pipermail/ifeffit/attachments/20181101/431f9b86/attachment-0001.html
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> --
>
> Message: 2
> Date: Thu, 1 Nov 2018 14:55:12 -0700
> From: Matthew Marcus 
> To: ifeffit@millenia.cars.aps.anl.gov
> Subject: Re: [Ifeffit] Bump/oscillating pattern at high energies of
> EXAFS
> Message-ID: 
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> 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  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
> > ___
> > Ifeffit mailing list
> > Ifeffit@millenia.cars.aps.anl.gov  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
> >