In Topas there are two options for treating low-angle asymmetry using diffractometer characteristics (i.e., "fundamental parameters") called "simple axial model" and "full axial model". But (this is my impression only) it seems that FCJ (Finger et al) approach works equally well. Starting from Topas2.1 it is implemented too, and you can easily compare. On the other hand, a very useful feature of Topas is the possibility to treat irregular peak asymmetry originating from "sample effects"... Sincerely, Maxim.
>Again, does this approach take care of low angle peak >asymmetry better? __________________________________ Maxim V. Lobanov Department of Chemistry Rutgers University 610 Taylor Rd Piscataway, NJ 08854 Phone: (732) 445-3811
