I'm trying to refine a LaB6 XRD pattern to get my instrument function.
Right now I'm using FullProf. The problem I have is that the calculated
intensity for the low angle peak, (100) at 24.87° for Co Ka rad., is way
too big (100%). So that throws off all my intensities (which I imagine are
also not correct) and I can't get reasonable R's. This happens whether I
use an Inel CPS-120 or a Siemens D500.
Is this a result of micro-absorption and can I correct for it using the
Brindley correction? I've found a few articles using this (just ordered
them), by Taylor, JC, et al. and Collazo J, et al. Are there any others
that would help to understand this phenomenon?
thanks,
chuck
Charles Witham
Graduate Research Assistant, Materials Science
California Institute of Technology
Mail Stop 138-78 ckw@hyperfine.caltech.edu
Pasadena, CA 91125 (626) 395-3627
fax -2940
JPL lab (818) 393-4209