Multiferroics wrote:But, the polarization, f',f" and the diffraction geometry, i always keep default.
Because i do not the good values for different x-ray....
The values of f' and f" are wavelength dependent and varies much especially around absorption edges.
If unsure about f' and f", you can find the program fprime, originally written for gsas by Robert B. von Dreele.http://www.ccp14.ac.uk/ccp/ccp14/ftp-mirror/gsas/public/gsas/windows/
It runs on most windows systems, I have tested with windows 2000, XP, Windows 7, they all work fine.
When entering a new structure in JANA2006 you are prompted to give the radiation related parameters (see picture)
Select polarized beam
About the diffraction geometry, what beamline were the data collected at, did you go there your self or are you looking at
data from someone else? Best thing is to ask the person who did the experiment or the people working at the beamline.
You do not have the required permissions to view the files attached to this post.