[Ifeffit] Athena: problems at the Bi L3 edge
Bruce Ravel
ravel at phys.washington.edu
Wed Oct 23 07:58:32 CDT 2002
> On Wed, 23 Oct 2002, "Carlo U. Segre" <segre at iit.edu> said:
CUS> I have a file which runs out about 1200eV above the edge
CUS> (13419eV). While Athena does find the high energy when setting
CUS> the default normalization and spline ranges, it does not plot
CUS> any of the data beyond 14220 (about 800eV above the edge). In
CUS> fact, there seems to be a hard limit of about 800eV above the
CUS> edge for all data and this translates into the k-space plot as
CUS> well. I am now unsure of what effect this might have on the
CUS> back transform if the defaults are not touched but certainly the
CUS> graphical setting of limits for normalization, spline fit,
CUS> fourier transform and back transform wil not work since the plot
CUS> does not show the complete data range.
Hey Carlo,
While I believe that you are indeed running up against one of Athena's
weak spots, a mere description is insufficient for me to troubleshoot
the problem. I really need a project file or a raw data file that
will reliably trigger this problem. I routinely use Athena on data
that extends beyond 1200eV, so this is not a generic problem.
I recently wrote up some guidelines for how you, the problem reporter,
can help me, the problem solver, solve problems quickly and
efficiently. Please take a look at
http://leonardo.phys.washington.edu/~ravel/software/exafs/bugs.html
To everyone reading this mailing list:
Please use the suggestions on that web page as appropriate to your
problem when communicating with me. I get software-related mail
*every day* and am often swamped. Communicating well with me will
really facilitate my ability to address your problem.
CUS> Another problem I have found is that the Auto Align feature is
CUS> somewhat unreliable and does not always yield a visually correct
CUS> shift. I haven't characterized when exactly this happens but it
CUS> has seemed to work once on a file and then not work later on the
CUS> same two files.
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