[Ifeffit] Solid AuCl EXAFS fitting – big N

[Bruce Ravel]

On 06/27/2014 01:14 AM, Sin Yuen Chang wrote:
> Given how many times AuCl XANES has been published before, has anyone
> else perhaps run into this problem? Has anyone perhaps measured solid
> AuCl under exclusion of moisture and air, or several times as a function
> of time to assess beam damage?
>

I was under the impression that *everyone* runs into that problem.  As
you say Au(1+) chloride is quite unstable.  Given that the white line
in the data that you took from my LCF fitting example is so close in
size to that of Au(3+) chloride, I would guess that the sample was no
pure Au(1+) by the time we measured it.

For something as tricky as Au(1+) chloride, I think it is unwise to
blindly trust data that you found in some disreputable corner of the
internet.  It really seems like the kind of thing you need to measure
for yourself if you want confidence in what you have.

B

-- 
  Bruce Ravel  ------------------------------------ bravel at bnl.gov

  National Institute of Standards and Technology
  Synchrotron Science Group at NSLS --- Beamlines U7A, X24A, X23A2
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