Figure 4
The rate of the horizontally polarized component to the total X-ray intensity (logarithmic left-hand ordinate) as a function of deviation angle from the Bragg condition of the first and second phase retarders. The right-hand ordinate shows intensities of X-rays reflected by the first (upper curve) and the second (lower curve) phase retarders. (a) and (b) correspond to cases of parallel and anti-parallel geometries, respectively. |