X-ray diffraction imaging of the diamond anvils based on the microfocus x-ray source with a liquid anode.

Rev Sci Instrum

International Research Center "Coherent X-ray Optics for Megascience Facilities, " Immanuel Kant Baltic Federal University, 236041 Kaliningrad, Russian Federation.

Published: August 2022

AI Article Synopsis

  • The paper discusses using advanced x-ray systems to study the crystal structure of single-crystal diamond anvils.
  • The study utilized a high-brightness x-ray source and a Rigaku camera to capture detailed images of crystal defects at high resolutions.
  • It highlights various defects observed in the crystal and suggests potential applications in high-pressure physics, along with recommendations for future enhancements to the x-ray setup.

Article Abstract

This paper presents the results of using laboratory x-ray systems in the study of the crystal structure of anvil made from single-crystal diamond. The system is equipped with an Excillum MetalJet D2 + 70 kV high-brightness x-ray source with a liquid GaIn anode. The x-ray diffraction imaging (topography) technique with the use of a high-resolution x-ray Rigaku camera was applied to analyze crystal structure defects. Two-dimensional images were experimentally recorded using 400 and 111 reflections with a resolution of 1.5 and 5 μm, respectively. These topograms displayed various defects, such as growth striations and dislocations. Possible applications of the proposed laboratory-based optical scheme for high-pressure physics are discussed and future improvements to the setup are suggested.

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http://dx.doi.org/10.1063/5.0080144DOI Listing

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