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Related Experiment Videos

X-ray diffraction topography using a diffractometer with a bendable monochromator at a synchrotron radiation source.

D Altin1, J Härtwig, R Köhler

  • 1European Synchrotron Radiation Facility (ESRF), Grenoble, France.

Journal of Synchrotron Radiation
|August 30, 2002
PubMed
Summary
This summary is machine-generated.

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A new versatile X-ray topographic instrument uses a bendable monochromator for high strain sensitivity imaging of all crystals. This design compensates for dispersion and sample bending, enabling detailed analysis without image size reduction.

Area of Science:

  • Materials Science
  • Crystallography
  • X-ray Optics

Background:

  • Double-crystal X-ray topography is crucial for analyzing crystal defects and strain.
  • Existing laboratory and synchrotron setups have limitations in versatility and image quality.

Purpose of the Study:

  • To develop a versatile X-ray topographic instrument with high strain sensitivity.
  • To achieve high-resolution imaging of diverse crystal types without compromising image size.

Main Methods:

  • Comparison of laboratory- and synchrotron-based double-crystal topographic setups.
  • Design and implementation of a novel instrument featuring a bendable, highly perfect silicon monochromator.

Main Results:

  • The proposed instrument achieves high strain sensitivity across various crystal samples.

Related Experiment Videos

  • Local adaptation of Bragg angles by the bendable monochromator effectively compensates for dispersion and sample bending.
  • Undegraded image size is maintained throughout the topographic analysis.

    • Conclusions:

    • A bendable monochromator is key to creating a versatile X-ray topography instrument.
    • This approach enables detailed investigation of crystal properties with enhanced sensitivity and image fidelity.