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- W2026973531 abstract "Time-resolved diffraction experiments with a LiNbO3-based surface acoustic wave (SAW) device were carried out at the 5BMD station of the APS. X-ray diffraction was measured using a 0.58 GHz standing SAW excitation. We observed well-defined diffraction satellites about the main diffraction maximum due to inelastic multiphonon scattering. The satellite intensity oscillated, as a function of the delay time, at 1.16 GHz (i.e., twice the SAW frequency). The maximum satellite contribution reached 40% of the main peak intensity, and proves that the SAW device acts as a fast and effective modulator for coming x-rays. In this study, the phase shift between the x-ray bursts and the acoustic deformation was changed both by electronic delay line (in steps of 18 ps) and by translating the diffractometer along the incident x-ray beam. We demonstrate that the later method can be used to produce very precise delay times in the fs- and ps-scale range. By using a motorized Thomson stage and a laser scan micrometer (Mitutoyo LSM-6000), the translations can be done in steps of 100 nm and monitored with the same precision. The measured positional fluctuations of the diffractometer at rest were within 200–400 nm, which yields the jitter of the corresponding time delay of about 1 fs." @default.
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- W2026973531 date "2002-03-01" @default.
- W2026973531 modified "2023-09-27" @default.
- W2026973531 title "Time and phase control of x-rays in stroboscopic diffraction experiments" @default.
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- W2026973531 doi "https://doi.org/10.1063/1.1425386" @default.
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