[Ifeffit] Fitting Problems via Artemis
Carlo U. Segre
segre at iit.edu
Fri Sep 24 16:32:48 CDT 2004
Norbert answered the last two but I think that I can give a bit of an
answer to the first one.
On Fri, 24 Sep 2004, hsnuboy at ksu.edu wrote:
>
> 1. What's the meaning and purpose of "Fit Background" in Artemis? I know
> the backgound as "bare atom" in EXAFS theory. So, what kind of
> situation we need to use this function?
The background fitting in Artemis is a sort of second chance to remove
background that was not completely removed in the initial processing
(Athena). It attempts to fit a background function to the residual below
the lower R fitting limit (for R-space fitting). I like it because it
allows you to be somewhat less concerned about the initial data processing
(it is still a good idea to be careful and thorough), particularly with
difficult samples with noisy data.
HTH,
Carlo
--
Carlo U. Segre -- Professor of Physics
Associate Dean for Special Projects, Graduate College
Illinois Institute of Technology
Voice: 312.567.3498 Fax: 312.567.3494
Carlo.Segre at iit.edu http://www.iit.edu/~segre
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