Dear Ifeffit Community,

I'm trying to fit a gold nanoparticle in the size of about 2 nm that is immobilized by polymers. For my research it's enought to fit the first shell only, becaues all I would like to analyze is the atomic distance in the nanoparticle. After the (hopefully) correct background substraction in Athena (athena file attached), there is a shoulder at approx. 2.1 Angström in the R-space.
In Artemis, fitting this shoulder seems not to be possible, while the fit for the reference (gold foil) seems to be fine. (both artemis files are attached to the e-mail).
If the k-range is decreased from 12.388 to a value between 9 an 10, the shoulder disappears and the fit works fine. But I think by this change I might modify the data too much.
Would be really nice, if sombody has an idea how to deal with the problem, to get a hint how to solve this.

Thanks a lot,
Julian