Hi Colin,

I think “capable of processing XES” might be aspirational. We are interested in improving the functionality for XES.

For XES, the general-purpose Peak Fitting tool included in the Larix GUI should be able to handle most XES data. But we don’t have specialized tools for XES fitting, yet. We also don’t have the specialized XPS backgrounds built in.

At the moment, the Larix GUI currently defaults to treating data with the X-axis labeled “energy” as XAS data. Again, we have been discussing this and would very much like to support XES data better.

Any help would be greatly appreciated.

--Matt

From: Morrell, Colin T. via Ifeffit <ifeffit@millenia.cars.aps.anl.gov>
Date: Saturday, June 14, 2025 at 7:09 AM
To: ifeffit@millenia.cars.aps.anl.gov <ifeffit@millenia.cars.aps.anl.gov>
Cc: Morrell, Colin T. <cmorrell@caltech.edu>
Subject: [Ifeffit] Larch for XES processing

Hello, I am new to the technique of XES and have been working out a way to analyze some XES spectra. I have used Larch in the past for XAS analysis and found a few places that indicated that larch is also capable of processing XES data in the

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Hello,

I am new to the technique of XES and have been working out a way to analyze some XES spectra. I have used Larch in the past for XAS analysis and found a few places that indicated that larch is also capable of processing XES data in the LarchGUI application. I have been working to install a version or find how to do this and have not been successful. Have XES support been removed from the larch applications?

Any help or clarification is greatly appreciated! Thank you in advance.

Sincerely,

Colin Morrell
PhD Candidate | See Group
Division of Chemistry & Chemical Engineering
California Institute of Technology