The sample is made of core-shell particles whose outer and inner shells are boxes with dimensions $L_1 = W_1 = 16$ nm, $H_1 = 8$ nm and $L_2 = W_2 = 12$ nm, $H_2 = 7$ nm, respectively, where $L_i$, $W_i$ and $H_i$ are the length, width and height of box $i$.
The smaller box is positioned so that the centres of the bottom faces of both particles coincide.
The simulation is run using the Born approximation. There is no substrate and no interference between the different scattered beams.
The planar distribution of the particles is diluted and random.
The incident wavelength is equal to 0.1 nm.
The incident angles are $\alpha_i = 0.2 ^{\circ}$ and $\varphi_i = 0^{\circ}$.