It's possible that your data really has a kink in it. Zoom in on that
last bit in E space before any background subtraction and see if there's
something odd-looking. If there's really an artifactual kink, then
there's not much you can do.
mam
On 10/29/2020 7:47 AM, Carlo Segre wrote:
I agree, this is a sign of a poor background subtraction. I find that
this can be mitigated by cutting back on your spl;ine range for
background subtraction. Change it by 0.5 at a time or less and keep
plotting in k-space. You might have to lose a bit of range but that
just means that the data is not good enough to extend that far.
Carlo
On Thu, Oct 29, 2020 at 9:23 AM Edmund Welter <edmund.wel...@desy.de
<mailto:edmund.wel...@desy.de>> wrote:
Dear Danting,
did you look on the background that is subtracted? I guess it is
your background that is doing something weird here. To look at the
background tick "Background" in the plot. In the region you mention
it should be a smooth line without visible oscillations.
Cheers,
Edmund
On 29.10.20 11:02, Chen, Danting wrote:
Hi Mr/Ms,
__ __
I am a new learner of XAS and meet a problem like before and hope
you can give me some hints.
__ __
__ __
I have a data set after merged and alignment. But at 11-13 A-1,
the amplitude of k is much higher than normal but there seems no
weird points at XAS spectrum. I wonder how I could deal with this
part? If I shorter kmax and it must lose some important information.
__ __
Best Wishes,
Danting
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for Windows 10
__ __
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Director, Center for Synchrotron Radiation Research and Instrumentation
Illinois Institute of Technology
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