Re: [Ifeffit] Ifeffit Digest, Vol 189, Issue 2
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
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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)
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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: < CAFsMoZbm2RMVUeRmuoryw9ehVrZQcvx60zHqufmK39oLRoyZ2w@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
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 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-request@millenia.cars.aps.anl.gov
You can reach the person managing the list at ifeffit-owner@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)
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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
participants (2)
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Anatoly Frenkel
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Raj kumar