[Ifeffit] Collected k-space and fitting range

Scott Calvin scalvin at sarahlawrence.edu
Thu Mar 3 20:52:34 CST 2016

Hi Terry,

The only possible difference would be due to differences in background subtraction. In practice, it’s a good idea to collect data ~1 inverse angstrom above the range you will analyze to make sure the background behaves properly toward the top of the fitted range. But beyond that it shouldn’t make much difference.

—Scott Calvin
Sarah Lawrence College

On Mar 3, 2016, at 8:33 PM, Taehoon Kim <oxonhoon at outlook.com<mailto:oxonhoon at outlook.com>> wrote:


I am a bit confused about the range of k-space, which may affect the quality of EXAFS fitting.
I would like to understand whether there is a difference between the fitting using an identical fitting range of k-space obtained from different range of k-space collected.

For example, is there a notable difference between a fitting of k = 2.3-11 which was deduced from a spectra data collected up to k=12 and a spectra data collected up to k=13 ?

Kind regards
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