[GSAS-II] Refining patterns with Kβ radiation

[Von Dreele, Robert B.]

Dear Johannes,
We have not implemented the inclusion of a Kb radiation along with Ka1 & 2. Besides the extra wavelength & intensity ratio, it will have different instrument resolution (UVW) parameters than the Ka1 & Ka2 pair. Sorry, I’m afraid you’re stuck with topas for this.
Best,
Bob


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From: davide levy via GSAS-II<mailto:gsas-ii at aps.anl.gov>
Sent: Tuesday, September 5, 2023 11:40 PM
To: 'Meusburger, Johannes M. (ARC-STX)[Oak Ridge Associated Universities]'<mailto:johannes.m.meusburger at nasa.gov>; gsas-ii at aps.anl.gov<mailto:gsas-ii at aps.anl.gov>
Subject: Re: [GSAS-II] Refining patterns with Kβ radiation

With TOPAS is possible.

From: GSAS-II <gsas-ii-bounces at aps.anl.gov> On Behalf Of Meusburger, Johannes M. (ARC-STX)[Oak Ridge Associated Universities] via GSAS-II
Sent: Wednesday, September 6, 2023 2:58 AM
To: gsas-ii at aps.anl.gov
Subject: [GSAS-II] Refining patterns with Kβ radiation

Hi everyone,

Is it possible to refine diffraction data acquired with CoKα1, CoKα2 and CoKβ radiation in GSAS-II?  In the instrument parameter file section of the documentation, I have just found the keywords Lam1:, Lam2: to define the wavelength and I(L2)/I(L1): to define the intensity ratio. Is there a way to include a Lam3 for the Kβ radiation?

Thanks and all the best,

Johannes
___________________________________________________________
Johannes Meusburger, Ph.D.
NASA Postdoctoral Program Fellow
Exobiology Branch
NASA Ames Research Center
Moffet Field, CA


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