Mossbauer diffraction in single Si crystals undergoing high-frequency ultrasonic excitation. The Bragg case
- 20 January 1988
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 21 (2) , 471-483
- https://doi.org/10.1088/0022-3719/21/2/028
Abstract
The influence of high-frequency ultrasonic waves on the dynamic diffraction of Mossbauer gamma quanta in a perfect Si crystal is studied. The scattering intensities as well as the diffractional Mossbauer spectra for different reflections and ultrasonic frequencies nu s are measured. Above the threshold frequency ( nu s> nu th), enhancement of elastic scattering is observed. At nu s< nu th, 'pumping' of the elastic component into the inelastic component occurs. The experimental data are in good agreement with the theoretical calculations.Keywords
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