[GSAS-II] 2D image Calibration of CeO2 (Ceria) Using a GE2 detector - Possible Detector Specific Issue

[Jonathan WRIGHT]

Are you fitting the sample to detector distance and the wavelength/unit 
cell ?

Having a typo in the wavelength can do this sort of thing. Your legend 
suggests someone input an energy of 70 keV. This is not an X-ray 
absorption edge, and so surprising if it is exactly true.

Best,

Jon


On 07/07/2017 18:02, Serio, Joseph A. wrote:
>
> A follow up to my previous question, for people who read this is in 
> the future. I have (hopefully) attached what my position calibration 
> appears as after performing the 2D image tilt calibration. It seems 
> that I am able to fit a function similar to the previous mentioned one 
> in order to model this shift, on the order of rtrue = rmeasured * (1 + 
> 0.004 (rmeas/detectorhalfsize)^2). This disagrees with the negative 
> “a” value obtained in the paper, instead yielded a necessary increase 
> in the diffraction ring diameter. Any help on this issue is still 
> appreciated.
>
> J.S.
>
>
>
> _______________________________________________
> GSAS-II mailing list
> GSAS-II at mailman.aps.anl.gov
> https://mailman.aps.anl.gov/mailman/listinfo/gsas-ii

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.aps.anl.gov/pipermail/gsas-ii/attachments/20170711/d48f0626/attachment.html>