Hi,
I have a question regarding the use of fixed radiated length data in a
laboratory powder diffractometer, with Bragg-Brentano geometry and programmable
divergence and antiscatter/receiving slits, which can also be used in the
"fixed slit" mode (in which the irradiated length on the sample varies with the
theta angle).
This is, for what cases the fixed radiated lenght is recommended instead of
fixed slits data?.
I have only these two choices for structure solution. For one compound I
solved, it seems to work better the fixed radiated length data, although the
background increases at high angles and I have to refine absorption (surface
roughness), to get positive thermal factors. Could someone explain why to use
one dataset or the other for structure solution and refinement?
Thanks,
Silvina.
