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
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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-- Carlo U. Segre -- Duchossois Leadership Professor of Physics Director, Center for Synchrotron Radiation Research and Instrumentation Illinois Institute of Technology Voice: 312.567.3498 Fax: 312.567.3494 segre@iit.edu http://phys.iit.edu/~segre segre@debian.org
