Hi Alberto,On an X'Pert pro diffractometer, the FDS and FASS are physically the same. On your diffractometer, you have just to put one slit in the anti-divergence position (close to the X-ray tube) and another one in the anti-scatter position (in front of the sample). The size of the divergent slit has to be half compared to the anti-scatter slit. For example, if you put a 1/4° slit in the anti-divergent position you have to put a 1/2° slit in the anti-scatter position.
Regards, Nicolas Le 24/03/2021 à 08:53, alberto.martine...@spin.cnr.it a écrit :
Dear all,my laboratory recently inherited an old X’Pert PRO diffractometer. Previous owners labelled some of the slits as FDS (Fixed Divergence Slit) or FASS (Fixed Anti-Scatter Slit), but most of the slits have no label. Actually, I cannot see any evident difference between FDS, FASS and other slits, so I’m wondering if a difference is really present or, conversely, if I can use each slit as a FASS or FDS, depending on my needs.Thanks in advance, Alberto ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list<alan.he...@neutronoptics.com> Send commands to<lists...@ill.fr> eg: HELP as the subject with no body text The Rietveld_L list archive is onhttp://www.mail-archive.com/rietveld_l@ill.fr/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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