New Performance Capabilities of Integral Dynamical Diffractometry of Crystal Imperfections

Lizunov, V. V.; Molodkin, V. B.; Olikhovskii, S. I.; Lizunova, S. V.; Tolmachev, N. G.; Nizkova, H. I.; Skakunova, O. S.; Dmitriev, S. P.; Sheludchenko, B. V.; Vasylyk, Ya. V.; Sych, T. G.; Fuzik, K. K.; Lekhnyak, R. V.; Skapa, L. M.

doi:10.15407/mfint.37.02.0265

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…The integrated reflection power azimuthal dependences of imperfect silicon crystals were also measured and investigated in the asymmetric Bragg diffraction geometry [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Untitled

2021

SPQEO

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Fundamental new features and physical nature of possibilities for purposeful influence of interrelated variations in different experimental conditions on changes of the selectivity of sensitivity of azimuthal dependence of the total integrated intensity dynamical diffraction to various types of defects in single crystals have been determined. As a result, the efficiency of the previously developed phase-variation principles of diagnostics has been improved. The proposed approach enabled us to demonstrate the presence of additional types of defects in the single crystals under study and to determine the defects parameters (sizes and concentrations). It makes it possible to obtain additional sensitivity and informativeness for phase-variation structure multiparametrical non-destructive diagnostics of monocrystalline systems with defects of various types.

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“…The integrated reflection power azimuthal dependences of imperfect silicon crystals were also measured and investigated in the asymmetric Bragg diffraction geometry [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Untitled

2021

SPQEO

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“…The azimuthal dependencies of the integrated reflection power were also measured and investigated in asymmetric Bragg diffraction geometry for imperfect silicon crystals with defects (Baryakhtar et al, 1991(Baryakhtar et al, , 1994Nemoshkalenko et al, 1994;Lizunov et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Dynamical effects in the integrated X-ray scattering intensity from imperfect crystals in Bragg diffraction geometry. I. Semi-dynamical model

et al. 2020

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The analytical expressions for the coherent and diffuse components of the integrated reflection coefficient are considered in the case of asymmetric Bragg diffraction geometry for a single crystal of arbitrary thickness, which contains randomly distributed Coulomb-type defects. The possibility to choose the combinations of diffraction conditions optimal for characterizing defects of several types by accounting for dynamical effects in the integrated coherent and diffuse scattering intensities, i.e. primary extinction and anomalous absorption, has been analysed based on the statistical dynamical theory of X-ray diffraction by imperfect crystals. The measured integrated reflectivity dependencies of the imperfect silicon crystal on azimuthal angle were fitted to determine the diffraction parameters characterizing defects in the sample using the proposed formulas in semi-dynamical and semi-kinematical approaches.

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Dynamical effects in the integrated X-ray scattering intensity from imperfect crystals in Bragg diffraction geometry. II. Dynamical theory

Molodkin¹,

Olikhovskii²,

Dmitriev³

et al. 2021

Acta Cryst Sect A

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The analytical expressions for coherent and diffuse components of the integrated reflection coefficient are considered in the case of Bragg diffraction geometry for single crystals containing randomly distributed microdefects. These expressions are analyzed numerically for the cases when the instrumental integration of the diffracted X-ray intensity is performed on one, two or three dimensions in the reciprocal-lattice space. The influence of dynamical effects, i.e. primary extinction and anomalously weak and strong absorption, on the integrated intensities of X-ray scattering is investigated in relation to the crystal structure imperfections.

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New Performance Capabilities of Integral Dynamical Diffractometry of Crystal Imperfections

Cited by 8 publications

References 7 publications

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Untitled

Dynamical effects in the integrated X-ray scattering intensity from imperfect crystals in Bragg diffraction geometry. I. Semi-dynamical model

Dynamical effects in the integrated X-ray scattering intensity from imperfect crystals in Bragg diffraction geometry. II. Dynamical theory

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