[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.



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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