Figure 4
(a) Transverse echo signals S(x) at the five points along the reflectivity curve indicated in Fig. 3 (a). The energy deviation from the maximal diffraction condition is indicated. The blue dots are the data extracted from the simulated images [see examples in Figs. 3 (d), (e)], while the red curves are the modelled multi-peak function [equation (11 )]. (b) Same as (a) for the on-diffraction condition point (3) but in vertical logarithmic scale. The positions of the direct beam hump (0th-order echo) and of the transverse echoes are indicated. |