[Ifeffit] data after rebinning look worse in k-space than before?

[Ilia Sinev]

Hi all,



I have a question regarding the chi(k) function isolation and rebinning
processes. I have some data recorded in “quasi channel-cut” modus, i.e.
with the mono constantly moving and the data points collected with the
highest possible rate. With 180 sec measurement in yields to a spectrum of
ca. 8600 point, which obviously needs to be rebinned. The rebinned data,
however, does not look good in k-space even if multiple data are merged.
Moreover, I have an impression that the raw spectrum in k-space does not
have those 8000+ points anymore but significantly less. Is there any
reduction of the data points number that is not seen (e.g. as a preparation
step for FT)? Since the unbinned data has higher quality, does it then make
more sense to keep using it for EXAFS analysis?

[image: image.png]

Thank you

Ilya Sinev



-- 

Dr. Ilya Sinev



Institute for Experimental Physics IV

Faculty of Physics and Astronomy

Ruhr-Universität Bochum

Universitätsstrasse 150

44801 Bochum, Germany
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