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High Pressure Single Crystal Diffraction at PX^2
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Diamond anvil cell radial x-ray diffraction program at the National Synchrotron Light Source.

J Z Hu1, H K Mao, J F Shu

  • 1X17 of NSLS, CARS, University of Chicago, Upton, NY 11973, USA.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|May 22, 2012
PubMed
Summary

Radial X-ray diffraction using a diamond anvil cell (DAC) has advanced at the National Synchrotron Light Source. This report details the energy-dispersive method and presents results for FeO at 135 GPa.

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Area of Science:

  • High-pressure physics and materials science.
  • Synchrotron-based X-ray diffraction techniques.

Background:

  • Development of radial X-ray diffraction using diamond anvil cells (DAC) over the past decade.
  • Established experimental capabilities at the X17C beamline of the National Synchrotron Light Source.

Purpose of the Study:

  • To describe the detailed experimental procedure for energy-dispersive X-ray diffraction with DAC.
  • To discuss the advantages and limitations of the energy-dispersive method for DAC radial diffraction.
  • To present results from radial diffraction experiments, including FeO at 135 GPa.

Main Methods:

  • Utilizing radial X-ray diffraction with a diamond anvil cell (DAC).
  • Employing energy-dispersive X-ray diffraction at the X17C beamline.
  • Performing high-pressure experiments on materials like FeO.

Main Results:

  • Detailed experimental procedures for DAC radial diffraction using energy-dispersive X-rays are outlined.
  • Analysis of the advantages and limitations of the energy-dispersive technique for high-pressure studies.
  • Presentation of experimental results for FeO at an extreme pressure of 135 GPa.

Conclusions:

  • The energy-dispersive radial X-ray diffraction method is a viable technique for high-pressure research.
  • The developed methods enable the study of materials under extreme conditions.
  • Further applications of this technique at the X17C beamline are demonstrated.