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Atomic displacement effects in near-edge resonant "forbidden" reflections

DOI: 10.1016/j.nima.2005.01.131 DOI Help

Authors: E. N. Ovchinnikova (Moscow State University) , V. E. Dmitrienko (A.V. Shubnikov Institute of Crystallography) , K. Ishida (Tokyo University of Science) , A. Kirfel (Mineralogisch-Petrologisches Institut der Universitat Bonn) , S. P. Collins (Diamond Light Source) , A. P. Oreshko (A.V. Shubnikov Institute of Crystallography) , D. Cabaret (Laboratoire de Mineralogie-Cristallographie (France)) , R. V. Vedrinskii (Rostov State University) , V. L. Kraizman (Rostov State University) , A. A. Novakovich (Rostov State University) , E. V. Krivitskii (Rostov State University) , B. P. Tolochko (Institute of Solid State Chemistry and Mechanochemistry (Russia))
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Nuclear Instruments And Methods In Physics Research Section A: Accelerators, Spectrometers, Detectors And Associated Equipment , VOL 543 (1) , PAGES 122 - 126

State: Published (Approved)
Published: May 2005

Abstract: A survey of atomic displacement effects in the resonant scattering of synchrotron radiation is presented. It is shown that the dynamical displacements, associated with thermal vibrations, provide the thermal-motion-induced (TMI) "forbidden" reflections, while static displacements (e.g. induced by impurities) provide the point-defect-induced (PDI) "forbidden" reflections. Both kinds of reflections occur owing to perturbation of valent electrons wave functions by atomic displacements. The results of numerical calculations of TMI forbidden reflections in Ge and ZnO are compared with experimental data. (c) 2005 Elsevier B.V. All rights reserved.

Journal Keywords: Synchrotron Radiation; Resonant Diffraction; Forbidden Reflections; Atomic Displacements; Diffraction; Disturbances; Electrons; Impurities; Point Defects; Reflection; Resonance Scattering; Synchrotron Radiation; Wave Functions; Zinc Oxides

Subject Areas: Physics

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