The Experts below are selected from a list of 270 Experts worldwide ranked by ideXlab platform
Stanislav Stoupin - One of the best experts on this subject based on the ideXlab platform.
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Large-surface-area diamond (111) Crystal plates for applications in high-heat-load wavefront-preserving x-ray Crystal Optics
Journal of Synchrotron Radiation, 2016Co-Authors: Stanislav Stoupin, Sergey Antipov, James E. Butler, Alexander V. Kolyadin, Andrey KatrushaAbstract: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.
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Large-surface-area diamond (111) Crystal plates for applications in high-heat-load wavefront-preserving x-ray Crystal Optics
arXiv: Instrumentation and Detectors, 2016Co-Authors: Stanislav Stoupin, Sergey Antipov, James E. Butler, Alexander V. Kolyadin, Andrey KatrushaAbstract:We report fabrication and results of high-resolution X-ray topography characterization of diamond single Crystal plates with a large surface area (10$\times$10 mm$^2$) and (111) Crystal surface orientation for applications in high-heat-load X-ray Crystal Optics. The plates were fabricated by laser cutting of the (111) facets of diamond Crystals grown using high-pressure high-temperature method. The intrinsic Crystal quality of a selected 3$\times$7~mm$^2$ Crystal region of one of the studied samples was found to be suitable for applications in wavefront-preserving high-heat-load Crystal Optics. The wavefront characterization was performed using sequential X-ray diffraction topography in the pseudo plane wave configuration and data analysis using rocking curve topography. The variation of the rocking curve width and peak position measured with a spatial resolution of 13$\times$13 $\mu m^2$ over the selected region were found to be less than one microradian.
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Novel diamond X-ray Crystal Optics for synchrotrons and X-ray free-electron lasers
Diamond and Related Materials, 2014Co-Authors: Stanislav StoupinAbstract:Abstract The most common applications of diamond Crystals in X-ray Optics are high-heat-load monochromators for synchrotron beamlines and phase retarders for polarization control. Here, less common applications of diamond at the frontier of X-ray Crystal Optics are reviewed and summarized. These include a sub-meV-bandwidth X-ray monochromator with high spectral efficiency [1] and all-diamond optical assemblies for a beam-multiplexing double-Crystal monochromator at the Linac Coherent Light Source [2]. Also, novel applications for the realization of fully coherent hard X-ray sources are discussed, such as, diamond Crystal Optics for self-seeding of hard X-rays in the Linac Coherent Light Source [3,4] and Bragg mirrors for the highly anticipated X-ray free-electron laser oscillator [5,6]. These examples present diamond as a material for the next generation of X-ray Optics, Optics which can provide unique characteristics and capabilities to modern X-ray sources. In addition, details of practical importance on fabrication and characterization methods of diamond Crystals with the suitable quality are presented.
Andrey Katrusha - One of the best experts on this subject based on the ideXlab platform.
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Large-surface-area diamond (111) Crystal plates for applications in high-heat-load wavefront-preserving x-ray Crystal Optics
Journal of Synchrotron Radiation, 2016Co-Authors: Stanislav Stoupin, Sergey Antipov, James E. Butler, Alexander V. Kolyadin, Andrey KatrushaAbstract: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.
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Large-surface-area diamond (111) Crystal plates for applications in high-heat-load wavefront-preserving x-ray Crystal Optics
arXiv: Instrumentation and Detectors, 2016Co-Authors: Stanislav Stoupin, Sergey Antipov, James E. Butler, Alexander V. Kolyadin, Andrey KatrushaAbstract:We report fabrication and results of high-resolution X-ray topography characterization of diamond single Crystal plates with a large surface area (10$\times$10 mm$^2$) and (111) Crystal surface orientation for applications in high-heat-load X-ray Crystal Optics. The plates were fabricated by laser cutting of the (111) facets of diamond Crystals grown using high-pressure high-temperature method. The intrinsic Crystal quality of a selected 3$\times$7~mm$^2$ Crystal region of one of the studied samples was found to be suitable for applications in wavefront-preserving high-heat-load Crystal Optics. The wavefront characterization was performed using sequential X-ray diffraction topography in the pseudo plane wave configuration and data analysis using rocking curve topography. The variation of the rocking curve width and peak position measured with a spatial resolution of 13$\times$13 $\mu m^2$ over the selected region were found to be less than one microradian.
H. F. Beyer - One of the best experts on this subject based on the ideXlab platform.
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Crystal Optics for precision x-ray spectroscopy on highly charged ions-conception and proof
Journal of Physics B: Atomic Molecular and Optical Physics, 2015Co-Authors: H. F. Beyer, D. Banas, Fritz Bosch, T. Gassner, Martino Trassinelli, R. Hess, U. Spillmann, K-h Blumenhagen, C. Brandau, W. ChenAbstract:The experimental investigation of quantum-electrodydamic contributions to the binding energies of inner shells of highly charged heavy ions requires an accurate spectroscopy in the region of hard x-rays suitable at a limited source strength. For this purpose the focusing compensated asymmetric Laue Crystal Optics has been developed and a twin-spectrometer assembly has been built and commissioned at the experimental storage ring of the GSI Helmholtzzentrum Darmstadt. We characterize the Crystal Optics and demonstrate the usefulness of the instrumentation for accurate spectroscopy of both stationary and fast moving x-ray sources. The experimental procedures discussed here may also be applied for other spectroscopic studies where a transition from conventional germanium x-ray detectors to Crystal spectrometers seems too demanding because of low source intensity.
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Crystal Optics for hard-X-ray spectroscopy of highly charged ions
Spectrochimica Acta Part B: Atomic Spectroscopy, 2009Co-Authors: H. F. Beyer, D. Attia, D. Banas, E.-o. Le Bigot, Fritz Bosch, J.-cl. Dousse, E. Förster, A. Gumberidze, S. Hagmann, S. HeßAbstract:A twin Crystal-spectrometer assembly, operated in the focusing compensated asymmetric Laue geometry has been developed for accurate spectroscopy of fast highly charged heavy ions in the hard-X-ray region. Coupled to the focusing Crystal Optics is a specially developed two-dimensional position-sensitive X-ray detector which is necessary for retaining spectral resolution also for fast moving sources. We summarize the Crystal Optics and demonstrate the usefulness of the instrument for spectroscopy of both stationary and fast moving X-ray sources. Results are reported from several tests employing a 169Yb gamma-ray source and the Lyman radiation of one-electron Pb81+ ions traveling at a velocity corresponding to [beta]†[reverse not equivalent]†v/c†[approximate]†0.59. The features of the instrument presented may be useful in many applications where it appears difficult to make the leap from conventional X-ray energy measurements to wavelength-dispersive spectroscopy based on Crystal Optics.
S. Heß - One of the best experts on this subject based on the ideXlab platform.
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Crystal Optics for hard-X-ray spectroscopy of highly charged ions
Spectrochimica Acta Part B: Atomic Spectroscopy, 2009Co-Authors: H. F. Beyer, D. Attia, D. Banas, E.-o. Le Bigot, Fritz Bosch, J.-cl. Dousse, E. Förster, A. Gumberidze, S. Hagmann, S. HeßAbstract:A twin Crystal-spectrometer assembly, operated in the focusing compensated asymmetric Laue geometry has been developed for accurate spectroscopy of fast highly charged heavy ions in the hard-X-ray region. Coupled to the focusing Crystal Optics is a specially developed two-dimensional position-sensitive X-ray detector which is necessary for retaining spectral resolution also for fast moving sources. We summarize the Crystal Optics and demonstrate the usefulness of the instrument for spectroscopy of both stationary and fast moving X-ray sources. Results are reported from several tests employing a 169Yb gamma-ray source and the Lyman radiation of one-electron Pb81+ ions traveling at a velocity corresponding to [beta]†[reverse not equivalent]†v/c†[approximate]†0.59. The features of the instrument presented may be useful in many applications where it appears difficult to make the leap from conventional X-ray energy measurements to wavelength-dispersive spectroscopy based on Crystal Optics.
Fritz Bosch - One of the best experts on this subject based on the ideXlab platform.
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Crystal Optics for precision x-ray spectroscopy on highly charged ions-conception and proof
Journal of Physics B: Atomic Molecular and Optical Physics, 2015Co-Authors: H. F. Beyer, D. Banas, Fritz Bosch, T. Gassner, Martino Trassinelli, R. Hess, U. Spillmann, K-h Blumenhagen, C. Brandau, W. ChenAbstract:The experimental investigation of quantum-electrodydamic contributions to the binding energies of inner shells of highly charged heavy ions requires an accurate spectroscopy in the region of hard x-rays suitable at a limited source strength. For this purpose the focusing compensated asymmetric Laue Crystal Optics has been developed and a twin-spectrometer assembly has been built and commissioned at the experimental storage ring of the GSI Helmholtzzentrum Darmstadt. We characterize the Crystal Optics and demonstrate the usefulness of the instrumentation for accurate spectroscopy of both stationary and fast moving x-ray sources. The experimental procedures discussed here may also be applied for other spectroscopic studies where a transition from conventional germanium x-ray detectors to Crystal spectrometers seems too demanding because of low source intensity.
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Crystal Optics for hard-X-ray spectroscopy of highly charged ions
Spectrochimica Acta Part B: Atomic Spectroscopy, 2009Co-Authors: H. F. Beyer, D. Attia, D. Banas, E.-o. Le Bigot, Fritz Bosch, J.-cl. Dousse, E. Förster, A. Gumberidze, S. Hagmann, S. HeßAbstract:A twin Crystal-spectrometer assembly, operated in the focusing compensated asymmetric Laue geometry has been developed for accurate spectroscopy of fast highly charged heavy ions in the hard-X-ray region. Coupled to the focusing Crystal Optics is a specially developed two-dimensional position-sensitive X-ray detector which is necessary for retaining spectral resolution also for fast moving sources. We summarize the Crystal Optics and demonstrate the usefulness of the instrument for spectroscopy of both stationary and fast moving X-ray sources. Results are reported from several tests employing a 169Yb gamma-ray source and the Lyman radiation of one-electron Pb81+ ions traveling at a velocity corresponding to [beta]†[reverse not equivalent]†v/c†[approximate]†0.59. The features of the instrument presented may be useful in many applications where it appears difficult to make the leap from conventional X-ray energy measurements to wavelength-dispersive spectroscopy based on Crystal Optics.