Abstract
The 222 and 600 reflections near the germanium absorption K edge were studied on the Kurchatov synchrotron radiation source. The energy spectrum of the 222 reflection is caused by the interference of the weak nonresonant and purely resonant contributions to the tensor atomic factor, whereas the 600 reflection is purely resonant. The energy dependence of the magnitude and phase of the resonant contribution to the scattering amplitude was determined from a change in the interference pattern. The numerical simulation of the energy spectra of reflections with the inclusion of the dipole-quadrupole and thermally induced contributions shows that the latter is dominant at room temperature.
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Original Russian Text © E.Kh. Mukhamedzhanov, M.M. Borisov, A.N. Morkovin, A.A. Antonenko, A.P. Oreshko, E.N. Ovchinnikova, V.E. Dmitrienko, 2007, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2007, Vol. 86, No. 12, pp. 896–900.
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Mukhamedzhanov, E.K., Borisov, M.M., Morkovin, A.N. et al. Absolute intensity and phase of the resonant X-ray scattering from a germanium crystal. Jetp Lett. 86, 783–787 (2008). https://doi.org/10.1134/S0021364007240071
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DOI: https://doi.org/10.1134/S0021364007240071