What is it about?
We give a comprehensive analytical model of the operation of a triple-Laue interferometer having the splitting or recombining crystal bent.
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Why is it important?
The measured value of the bulk lattice parameter of 28Si using X-ray interferometry is essential to realize the kilogram by counting 28Si atoms. However, analytical and numerical studies of the X-ray propagation in bent crystals suggest that the measured lattice spacing might refer to the crystal surface. Our study confirms these clues and supports experimental tests.
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This page is a summary of: Crystal bending in triple-Laue X-ray interferometry. Part I. Theory, Journal of Applied Crystallography, May 2023, International Union of Crystallography,
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