Jo,
The surface roughness coefficients can be refined, but they can
be very touchy. Do you have evidence (all very low angle peaks
computing much higher than observed) for a need for the correction?
The flag should not "untick" itself in EXPGUI unless the @#$#^&
author got it wrong again.
Brian
On Mar 20, 2007, at 12:35 PM, Duncan, Jo wrote:
Hello all,
Using expgui (GSAS) and I am trying to get some bragg-bretano flat
plate surface roughness corrections on the go.
I have used the absorption for cylindrical samples (tof) when I
define the number but whenever I try to refine the quantity and run
genles it resets to zero and unticks itself everytime.
Is it the case that you have to enter the absorption coeffs
yourself? If so, why is there a tick box?
Thanks in advance.
Jo
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Brian H. Toby, Ph.D. office: 630-252-5488
Materials Characterization Group Leader, Advanced Photon Source
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