[Ifeffit] Problem with importing projects from ATHENA into ARTEMIS

Bruce Ravel bravel at bnl.gov
Mon Apr 7 10:45:54 CDT 2014

There are a number of known problems with the current version of 
Artemis.  It's pretty much impossible for me to troubleshoot without 
examples being posted to the mailing list.


On 04/07/2014 11:17 AM, Matt Newville wrote:
> 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
>> Tel. +49 (0)40 8998-6986
>> Fax +49 (0)40 8998-1905
>> www.xfel.eu/de
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>> beim Amtsgericht Hamburg, HRB 111165

  Bruce Ravel  ------------------------------------ bravel at bnl.gov

  National Institute of Standards and Technology
  Synchrotron Science Group at NSLS --- Beamlines U7A, X24A, X23A2
  Building 535A
  Upton NY, 11973

  Homepage:    http://xafs.org/BruceRavel
  Software:    https://github.com/bruceravel

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