Figure 8
(a) Transverse echo signals S(x) at the five points along the reflectivity curve of Fig. 7 (a). The energy deviation from the maximal diffraction condition is indicated. The blue dots are the data extracted from the experimental images [see examples in Figs. 7 (b), (c)], while the red curves are the modelled Lorentz multi-peak function [equation (12 )]. (b) Same as (a) for the off-Bragg condition point (1) and for the on-Bragg condition point (3) but in vertical logarithmic scale. The position of the direct-beam hump (0th-order echo) and of the transverse echoes is indicated. |