(a) Image of the interference stripes in the case of the experimental condition (iii) L = 1400 mm, = 14.92 keV (h = 8) measured by the high-resolution CCD camera (see Fig. 4). The interference pattern can be observed over a wider area than in the case of 7.46 keV (h = 4) case. (b) The one-dimensional profile obtained from (a). The vertical direction in the box in (a) was integrated.