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Observation of sagittal X-ray diffraction by surface acoustic waves in Bragg geometry
- X-ray Bragg diffraction in sagittal geometry on a Y-cut langasite crystal (La3Ga5SiO14) modulated by Lambda = 3 mu m Rayleigh surface acoustic waves was studied at the BESSY II synchrotron radiation facility. Owing to the crystal lattice modulation by the surface acoustic wave diffraction, satellites appear. Their intensity and angular separation depend on the amplitude and wavelength of the ultrasonic superlattice. Experimental results are compared with the corresponding theoretical model that exploits the kinematical diffraction theory. This experiment shows that the propagation of the surface acoustic waves creates a dynamical diffraction grating on the crystal surface, and this can be used for space-time modulation of an X-ray beam.
| Verfasserangaben: | Simone Vadilonga, Ivo ZizakORCiD, Dmitry Roshchupkin, Emelin Evgenii, Andrei Petsiuk, Wolfram LeitenbergerGND, Alexei Erko |
|---|---|
| DOI: | https://doi.org/10.1107/S1600576717002977 |
| ISSN: | 1600-5767 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/28381976 |
| Titel des übergeordneten Werks (Englisch): | Journal of applied crystallography |
| Verlag: | International Union of Crystallography |
| Verlagsort: | Chester |
| Publikationstyp: | Wissenschaftlicher Artikel |
| Sprache: | Englisch |
| Jahr der Erstveröffentlichung: | 2017 |
| Erscheinungsjahr: | 2017 |
| Datum der Freischaltung: | 20.04.2020 |
| Freies Schlagwort / Tag: | optics; sagittal X-ray diffraction; surface acoustic waves; synchrotron radiation |
| Band: | 50 |
| Seitenanzahl: | 6 |
| Erste Seite: | 525 |
| Letzte Seite: | 530 |
| Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer Review: | Referiert |
