[Ifeffit] limits for second shell

Carlo Segre segre at iit.edu
Thu Aug 20 23:21:01 CDT 2009

Hi Eugenio:

It might be better if you sent an image (PNG, JPG) instead of a format 
which is not easily viewed.


On Fri, 21 Aug 2009, Eugenio Otal wrote:

> Hi,
> I have a sample of a pure Er2O3 (blue line in the attached graph) and a
> sample of doped ZnO with erbium that has segregated the same oxide (red
> line) by thermal treatmen.
> The signal for de segregated oxide gets noisy around k=9 because the sample
> is so diluted, but the radial distribution shows second shell signal,
> smaller than the pre oxide, but still a signal. My doubt is about how to
> know if the second shell is real and if that second shell can be useful to
> obtain information. Is there a criteria to know that? Some limit in k-space?
> Thanks, euG

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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