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Z G Pinsker (1982)
X-ray Crystal Optics
(2010)
Poverkhnost, No. 11
S Takagi (1962)
10.1107/S0365110X62003473Acta Crystallogr., 15
A H Naifeh (1973)
Perturbation Methods
Abstract The nonstandard theory of X-ray scattering in a deformed crystal has been generalized. The vector of atomic-plane displacement is introduced into the crystal polarizability model like in the generalized Takagi dynamic theory. The solution to the wave equation is sought for using the procedure of expanding the field amplitude and vector operators in the Fourier components of polarizability χ H in a series according to the multiscale method. It is shown that considering lattice strain generally calls for introducing various characteristic spatial regions for the diffraction equation, which is in complete agreement with the main concept of the multiscale method. A particular case of a strain field depending on one scale is considered. If a relative change in strain occurs at a length on the order of the extinction length, one can obtain equations generalizing the Takagi equations to the case of arbitrary diffraction geometries.
Crystallography Reports – Springer Journals
Published: Dec 1, 2013
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