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Failure Analysis of Batteries Using Synchrotron-based Hard X-ray Microtomography
Published on: August 26, 2015
Demonstration of a picosecond Bragg switch for hard X-rays in a synchrotron-based pump-probe experiment
Mathias Sander1, Roman Bauer2, Victoria Kabanova1
1European Sychrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France.
Abstract:
A benchmark experiment is reported that demonstrates the shortening of hard X-ray pulses in a synchrotron-based optical pump-X-ray probe measurement. The pulse-shortening device is a photoacoustic Bragg switch that reduces the temporal resolution of an incident X-ray pulse to approximately 7.5 ps. The Bragg switch is employed to monitor propagating sound waves in nanometer thin epitaxial films. From the experimental data, the pulse duration, diffraction efficiency and switching contrast of the device can be inferred. A detailed efficiency analysis shows that the switch can deliver up to 109 photons s-1 in high-repetition-rate synchrotron experiments.
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