Figure 7
Peak heights, as fitted to the normalized intensity distributions in Fig. 5, for the orders with index m = +1 (filled circles) and with index m = −1 (open circles) depending on the orientation angle ψ. r is the ratio between the measured diffracted intensity and the incident intensity. The lines refer to the predictions assuming constant and identical efficiencies for the diffraction into both orders of 0.155 and a variation of the beam crossection according to ϑm/θ. |