Diffraction of a focused x-ray beam from La3Ga5SiO14 crystal modulated by surface acoustic waves

作者：Roshchupkin Dmitry^*; Irzhak Dmitry; Snigirev Anatolii; Snigireva Iraida; Ortega Luc; Sergeev Alexander

来源：Journal of Applied Physics, 2011, 110(12): 124902.

DOI：10.1063/1.3669399

X-ray Bragg diffraction on an acoustically modulated La3Ga5SiO14 crystal (langasite, LGS) was studied in the saggital geometry where a surface acoustic wave (SAW) serves as diffraction grating of normal incidence. A set of parabolic compound Be refracting lenses was used to focus x-ray radiation in order to obtain good angular and spatial resolution of diffraction satellites. X-ray diffraction spectra analysis provided information on the acoustic properties of the LGS crystal and enabled the determination of SAW amplitudes and wavelengths.

• 出版日期2011-12-15