General Principles of Small-Angle Diffraction
X-ray and neutron scattering can be used to investigate a wide range of substances, such as poly- and single crystals, metals and alloys, amorphous solids and liquids, synthetic polymers, and biological macromolecules, among others. The properties of the diffraction patterns for objects with different ordering are considered in Section 2.1. When analyzing the structure of the majority of highly disperse systems, it is sufficient to take into account the very-low-angle diffraction region — “small-angle scattering.” Section 2.2 presents the principal relationships for the case of small-angle diffraction.
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