Computer Simulation of the Effect of Coherent Dynamical Diffraction of Synchrotron Radiation in Crystals of Arbitrary Shape and Structure

Kohn, V. G.

doi:10.1134/s1063774523020086

Crystallogr. Rep.

2023

DOI: 10.1134/s1063774523020086

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Computer Simulation of the Effect of Coherent Dynamical Diffraction of Synchrotron Radiation in Crystals of Arbitrary Shape and Structure

V. G. Kohn

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2024

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Cited by 3 publications

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Dynamical and kinematical X-ray diffraction in a bent crystal

Malkov,

Punegov

2024

J Appl Crystallogr

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Numerical modeling of kinematical and dynamical X-ray diffraction in a bent crystal was performed on the basis of two approaches to integrating the Takagi–Taupin equations, and using two-dimensional recurrence relations. Within the framework of kinematical diffraction, a new equation is obtained that describes the distribution of diffracted intensity inside a bent crystal. The time taken for numerical calculations based on this equation is significantly reduced in comparison with the use of algorithms of the dynamical diffraction theory. The simulation shows for the first time that, for strongly bent crystals, the maximum value of the diffraction intensity is formed inside the deformed structure and not on its surface. In the case of strong bending of the crystal structure, the deviation of the X-ray beam from the Bragg angle does not change the diffraction pattern but shifts it along the lateral direction. The results of calculations of diffraction in a strongly bent crystal based on the equations of dynamical and kinematical diffraction coincide, while the computations for weakly bent crystals differ. The possibility of estimating the primary extinction length of a bent crystal as a function of the bending radius is shown. In the case of kinematical diffraction in bent crystalline microsystems, a new method has been developed to calculate X-ray reciprocal-space mapping.

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Dynamical and kinematical X-ray diffraction in a bent crystal

Malkov,

Punegov

2024

J Appl Crystallogr

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On the Theory of Diffraction of Limited Synchrotron Radiation Beams in Single Crystal in the Laue Case

Kohn,

Smirnova

2024

Crystallogr. Rep.

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Computer Simulation of X-ray Section Topography of Gas Pores in a Silicon Carbide Crystal

Kohn

2024

Crystallogr. Rep.

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Computer Simulation of the Effect of Coherent Dynamical Diffraction of Synchrotron Radiation in Crystals of Arbitrary Shape and Structure

Cited by 3 publications

References 19 publications

Dynamical and kinematical X-ray diffraction in a bent crystal

Dynamical and kinematical X-ray diffraction in a bent crystal

On the Theory of Diffraction of Limited Synchrotron Radiation Beams in Single Crystal in the Laue Case

Computer Simulation of X-ray Section Topography of Gas Pores in a Silicon Carbide Crystal

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