A preferred orientation correction to describe a fiber texture under glancing incidence

Simeone, D.; Gosset, D.; Baldinozzi, G.

doi:10.1107/S0021889812045736

Figure 3
Schematic description of the sample and the hkl frames. For each hkl reflection, $[{\bf Z}_{\rm L}]$ is parallel to the scattering vector $[{\bf q}_{hkl}}]$ . $[{\bf X}_{\rm L}]$ , normal to the scattering plane, remains parallel to $[{\bf X}_{\rm S}]$ . $[{\bf Y}_{\rm L}]$ lies on the scattering plane in a general position. In Bragg-Brentano geometry, $[\omega_{hkl}]$ is null for all reflections and the two frames are identical. As clearly displayed in Fig. 2

, the $[\omega_{hkl} {\bf X}_{\rm S}]$ rotation allows the transformation of the sample frame into the hkl frame.