“…On the one hand, a mutual spatial arrangement of particles influences physical properties of material. For example, effects of interparticle interference in small-angle scattering of X-rays and neutrons [1,4] and in scattering of visible light (and hence a turbidity of materials) [5][6][7] are immediately determined by PCF. This allows one to use the experimental data on scattering for obtaining information on PCF [5,8,9].…”