Diffractometer geometries

[Dr DG Billing]

Dear All,
I was recently provided with a set of data that had been collected on a
D5000 diffractometer equiped with a primary beam monochromator, using a
capillary sample mount. (Transmission data) I would appreciate it greatly if
somebody could inform me as to the correct geometrical description of this
set-up, as well as how this data should be treated when used for rietveld
refinement using DBWS98.

Thanking you all in advance
regards
Dave Billing