Figure 1
(a) Typical pseudo-precession diffraction pattern from CRMP-4 crystals (form B). The h0l plane is shown. Sharp reflections are observed along h for l = 5n. The other reflections are diffuse, with the streaks being most prominent at l = 5n + 2 and l = 5n + 3. LABELIT (Sauter et al., 2004) was used to calculate the diffraction image from the experimental data and to produce the figure. (b) Layer-averaged intensities before and after different corrections. A similar curve for calculated intensities is shown for comparison. Observed intensities show clear modulation, with every 5n layer being strong (corresponding to the l layers with sharp Bragg spots). The different corrections remove the modulation and improve the fit to the calculated data, with DIGS being more efficient. |