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Figure 2
Simulation of a GID azimuthal rocking curve. Model: incident angle [\theta_0] = 0.5°, wavelength λ = 0.154 nm. Si mono-crystal, surface orientation (001), scattering crystal planes series {220}, no miscut ψ = 0°; with 9 nm distorted crystalline Si layer with lateral lattice constant difference 1 - acrystal/alayer = 0.1%. (a) GID azimuthal rocking curve. (b) Dispersion surface cross section. Orange curves – dispersion in the substrate, blue curves – dispersion in the subsurface layer, blue dashed curve – neglected root of dispersion equation.

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