Capillary is silica glass :-)

> On 22 Apr 2023, at 11:57 am, Anatoly Frenkel <anatoly.fren...@stonybrook.edu> 
> wrote:
> 
> Capillary made or what?
> 
> Anatoly
> 
>> On Apr 21, 2023, at 9:52 PM, Joel Brugger <joel.brug...@monash.edu> wrote:
>> 
>> Fluo, 0.5 wt% Cu.
>> 
>>> On 22 Apr 2023, at 11:41 am, Anatoly Frenkel 
>>> <anatoly.fren...@stonybrook.edu <mailto:anatoly.fren...@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.brug...@monash.edu 
>>>> <mailto:joel.brug...@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.brug...@monash.edu <mailto:andrew.mackint...@monash.edu> 
>>>> Twitter: @JoelBrugger
>>>> 
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