High-frequency stroboscopic x-ray topography under surface acoustic wave excitation

摘要

The pulse structure of synchrotron radiation was used in order to carry out time-resolved x-ray diffraction imaging of high-frequency (up to 0.6 GHz) surface acoustic waves propagating through a single crystal. In x-ray topographs, recorded in the stroboscopic mode, the short wavelength (down to 6μm) individual wave fronts are clearly visible, providing information on the acoustic scattering processes with participation of lattice defects.