[Ifeffit] Problem with importing projects from ATHENA into ARTEMIS

Matt Newville newville at cars.uchicago.edu
Mon Apr 7 10:17:10 CDT 2014

Hi Alexander,

I think you may not alone in having this issue.   You should be using
normalized chi(k) in Artemis, but I don't think Artemis would be
reading chi(k) from the project file incorrectly.... Perhaps there is
something strange about how you're doing the normalization?   Or
perhaps it is just a question of what k-weighting is being used for
the plot. Unfortunately, the PNGs I see have been cropped and don't
show the labels of the axes.

I'm sending this to the Ifeffit mailing list, where you'll probably
get a more complete answer.

On Mon, Apr 7, 2014 at 9:57 AM, Britz, Alexander
<alexander.britz at xfel.eu> wrote:
> Dear Mr. Newville,
> I came across a problem when I import an ATHENA project after normalization into ARTEMIS. Maybe you could tell me who to contact about this problem. Let me try to explain it in few words:
> I normalize my EXAFS data in ATHENA and safe it a s a .prj file. When I open the .prj file in ARTEMIS I noticed, that the amplitude of some oscillations have changed. When I save the chi(k) as .txt, this problem does not occur. When I open the chi(k) text file in ARTEMIS, the normalization and the amplitude of the oscillations are exactly the same as in ATHEN.
> I have attached a .png file for the EXAFS in k-space. It is the same .prj file, one time opened in ARTEMIS, one time in ATHENA. To be more specific, the amplitude of the oscillation at k=3 is -1.4 and -1.6, respectively.
> Thank you very much for your help in advance!
> Best regards from Hamburg,
> Alexander
> ________________________________________
> Alexander Britz
> European XFEL GmbH
> alexander.britz at xfel.eu
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--Matt Newville <newville at cars.uchicago.edu> 630-252-0431

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