[Ifeffit] SO2 for samples with non-planar geometry

[Joel Brugger]

Fluo, 0.5 wt% Cu.

> On 22 Apr 2023, at 11:41 am, Anatoly Frenkel <anatoly.frenkel at stonybrook.edu <mailto:anatoly.frenkel at stonybrook.edu>> wrote:
> 
> Fluorescence or transmission?
> What is the Cu concentration? Could be self absorption. 
> 
> Anatoly
> 
>> On Apr 21, 2023, at 9:31 PM, Joel Brugger <joel.brugger at monash.edu <mailto:joel.brugger at monash.edu>> wrote:
>> 
>> Dear list,
>> 
>> We are trying to fit EXAFS from data collected on solutions within a capillary. The capillary has OD 1mm, ID 0.8mm, and was placed horizontally. The beam is 1x2 mm (VxH).
>> 
>> Fitting the copper reference foil, we get the expected SO2 value of ~0.7.
>> 
>> However, the solution containing the Cu(II) aqua ion gives a coordination of 2, instead of the expected 5-6. So our SO2 for this solution is apparently ~0.25. 
>> 
>> I couldn’t find a discussion of the effect of geometry (in our case cylindrical rather than planar) on SO2. Is it possible that the low SO2 is a result of the odd geometry?
>> 
>> Confused as ever,
>> 
>> JOEL
>> 
>> 
>> Joël Brugger
>> Professor of Synchrotron Geosciences
>> 
>> Monash University
>> School of Earth, Atmosphere and Environment 
>> Room 257A, Level 2, 9 Rainforest Walk <x-apple-data-detectors://2>
>> Clayton, Victoria 3800 <x-apple-data-detectors://2>
>> Australia <x-apple-data-detectors://2>
>> 
>> T: +61 3 9905 4898 <tel:+61%203%209902%209095>
>> E: Joel.Brugger at monash.edu <mailto:Andrew.Mackintosh at monash.edu> 
>> Twitter: @JoelBrugger
>> 
>> _______________________________________________
>> Ifeffit mailing list
>> Ifeffit at millenia.cars.aps.anl.gov <mailto:Ifeffit at millenia.cars.aps.anl.gov>
>> http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit <http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit>
>> Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit <http://millenia.cars.aps.anl.gov/mailman/options/ifeffit>
> _______________________________________________
> Ifeffit mailing list
> Ifeffit at millenia.cars.aps.anl.gov <mailto:Ifeffit at millenia.cars.aps.anl.gov>
> http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
> Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/attachments/20230422/aa9357a8/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 1656 bytes
Desc: not available
URL: <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/attachments/20230422/aa9357a8/attachment-0001.p7s>