GSAS Refinement Hints

Profile Terms

GSAS Profile 4 anisotropy Sxxx terms

From: Robert Von Dreele <vondreele@aps.anl.gov>
Date: July 29, 2011

Usually, I do the S4xx ones first & then the others. The thing is fairly stable after that. Do do all of them at once in any case  in the end. The S4xx must be > 0 but the rest can be any sign. If you want a quick way of seeing the shape, run mustrplot (spelling?) in GSAS; you'll need gnuplot to see the plot. For monoclinics, it might look like two beans back-to-back.

-Bob