[Ifeffit] Fitting Cu2O

Carlo Segre segre at iit.edu
Fri Jul 3 10:54:52 CDT 2009

Hi Abhijeet:

I wasnot able to view the BMP.  Perhaps a PNG or JGP would be a better 
format.  in any case, a figure is very hard to assess.  My incilnation is 
to say that you hve something very wrong with your fitting if your SS is 
negative.  This is not really very physical.

If you could attache your artemis project file, it would allow others to 
anszer your questions more effectively.


On Fri, 3 Jul 2009, abhijeet gaur wrote:

> Hi all,
>         I am fitting Cu2O data. But when I fit the first shell using the
> first path, I got the guess value for SS parameter negative which is around
> -0.0028 and also the guessed value for SO2 parameter comes out to be around
> 0.52. Are these values logically correct as I am getting a nice fit.
>      Also when I use the same SS parameter but with positive sign for the
> first shell i.e., 0.0028, the guessed value for SO2 parameter comes out to
> be 0.61.
>     When I fit the higher shells by using the same SO2 and Enot value for
> other paths, the value of SS parameter for these paths is coming very high ,
> i.e., 0.016 - 0.021. But the fit seems to be quiet good. Are these higher
> values of SS parameter correct. The resulting figure is attached.
> with thanks
> Abhijeet Gaur
> School of Studies in Physics
> Vikram University, Ujjain, INDIA.

Carlo U. Segre -- Professor of Physics
Associate Dean for Graduate Admissions, Graduate College
Illinois Institute of Technology
Voice: 312.567.3498            Fax: 312.567.3494
segre at iit.edu   http://www.iit.edu/~segre   segre at debian.org

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