[Ifeffit] EXAFS fitting sum of all paths in R space

Ashwini Kumar Poswal poswalashwini at gmail.com
Wed Sep 23 08:00:32 CDT 2020


Dear All,
I have one problem regarding the sum of all paths (R-space) after fitting.
If we include many paths for the fitting, the fitting shows a good fit but
after fitting, I select all paths and export (using Artemis [Data] window:
save data + marked paths as |χ(R)|. I plotted all paths in origin as well
as the sum of all paths. But when I add up all the contributions from all
the paths, the deviation at larger paths is extraordinarily high and not
equal to final fit. I am attaching a figure for illustration. It is clearly
seen that the final fit is lesser compared to one of the path and the sum
of all paths is quite high compared to fit (as shown in second figure. Can
anybody suggest, how to sum different paths?
[image: image.png]
[image: image.png]

Regards
*Ashwini Kumar Poswal*
*Mumbai*
*Tel.-+91 (022) 25595081*
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