X-ray diffraction in thick perfect crystals with deformed subsurface layers

The diffraction of X-rays in thick perfect crystals with deformed subsurface layers has been investigated. It was shown that the kinematic scattering of X-rays took place in deformed layers, while the dynamical one occurred in the perfect part of the crystal, -its bulk; also, that in beams of X-rays diffracted on surface defects, the role played by the second harmonics of the applied characteristic radiation MoKα₁ was essential.