Abstract
The X-ray intensities of almost-forbidden reflections 301 and 303 in a single crystal of magnesium have been measured at 293 K. Effective monochromatization by appropriate electronics was utilized to increase the observability of these weak reflections. The data are interpreted in terms of atomic vibrations by application of a quantum-statistical one-particle formalism that allows anharmonic contributions to the atomic temperature factor. A value of -0.43 (3) eV Å-3 is obtained for the third-order anharmonic parameter, the negative sign being deduced from the coordination. This outcome is in accordance with earlier results concerning anharmonic vibrations.
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Schedule a callMore From: Acta Crystallographica Section A Foundations of Crystallography
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