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<p>Are you fitting the sample to detector distance and the
wavelength/unit cell ? <br>
</p>
<p>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.<br>
</p>
<p>Best,</p>
<p>Jon<br>
</p>
<br>
<div class="moz-cite-prefix">On 07/07/2017 18:02, Serio, Joseph A.
wrote:<br>
</div>
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<p class="MsoNormal">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.<o:p></o:p></p>
<p class="MsoNormal"><o:p>�</o:p></p>
<p class="MsoNormal"><o:p>�</o:p></p>
<p class="MsoNormal">J.S.<o:p></o:p></p>
<p class="MsoNormal"><o:p>�</o:p></p>
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