[Ifeffit] Fit in R or k

[LIMA DA SILVA, WILL (PGR)]

Dear IFEFFIT members,

I have been fitting some EXAFS data, and my supervisor and I are having doubts if it's better to fit in k or R space. What are the main differences between the two approaches?
I have learnt that R space is the right approach, but I am not sure how to explain it.

Much appreciated,

Will Silva
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