title: Large-surface-area diamond (111) crystal plates for applications in high-heat-load wavefront-preserving X-ray crystal optics.
abstract: Fabrication and results of high-resolution X-ray topography characterization of diamond single-crystal plates with large surface area (10 mm × 10 mm) and (111) crystal surface orientation for applications in high-heat-load X-ray crystal optics are reported. The plates were fabricated by laser-cutting of the (111) facets of diamond crystals grown using high-pressure high-temperature methods. The intrinsic crystal quality of a selected 3 mm × 7 mm crystal region of one of the studied samples was found to be suitable for applications in wavefront-preserving high-heat-load crystal optics. Wavefront characterization was performed using sequential X-ray diffraction topography in the pseudo plane wave configuration and data analysis using rocking-curve topography. The variations of the rocking-curve width and peak position measured with a spatial resolution of 13 µm × 13 µm over the selected region were found to be less than 1 µrad.
authors: Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, USA.
authors: Stanislav
authors: S
authors: Stoupin
authors: Euclid Techlabs LLC, Solon, Ohio, USA.
authors: Sergey
authors: S
authors: Antipov
authors: Euclid Techlabs LLC, Solon, Ohio, USA.
authors: James E
authors: JE
authors: Butler
authors: New Diamond Technology LLC, St Petersburg, Russia.
authors: Alexander V
authors: AV
authors: Kolyadin
authors: New Diamond Technology LLC, St Petersburg, Russia.
authors: Andrey
authors: A
authors: Katrusha
keywords: X-ray monochromator; diamond crystal; high heat load; wavefront preservation