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High-frequency X-ray beam chopper based on diffraction by surface acoustic waves.

R Tucoulou1, D V Roshchupkin, O Mathon

  • 1ESRF, BP 220, 38043 Grenoble CEDEX 9, France.

Journal of Synchrotron Radiation
|May 12, 2006
PubMed
Summary
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This study demonstrates an X-ray pulse selection method using ultrasonic waves. By synchronizing surface acoustic waves with storage ring filling modes, researchers can precisely control X-ray pulse delivery for experiments.

Area of Science:

  • Materials Science
  • Solid State Physics
  • Optics and Photonics

Background:

  • X-ray diffraction is a powerful tool for material analysis.
  • Controlling the temporal structure of X-ray pulses is crucial for advanced experiments.
  • Surface acoustic waves (SAWs) can modulate X-ray beams.

Purpose of the Study:

  • To develop a method for selecting or rejecting X-ray pulses using ultrasonic waves.
  • To correlate the temporal structure of SAWs with X-ray pulse timing.
  • To demonstrate the performance of an MHz-range X-ray chopper.

Main Methods:

  • Utilizing X-ray diffraction on surface acoustic waves in crystals.
  • Matching the temporal structure of SAWs with storage ring filling modes.
  • Implementing an MHz-range chopper based on this principle.

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Main Results:

  • Diffraction satellites exhibiting temporal structure correlated to the SAW were observed.
  • Successful selection and rejection of incident X-ray pulses were achieved.
  • Performance of the chopper was demonstrated for various storage ring filling modes.

Conclusions:

  • The developed method enables precise temporal control of X-ray pulses.
  • This technique offers a novel approach for MHz-range X-ray choppers.
  • The findings have implications for time-resolved X-ray experiments.