scholarly journals X-ray metrology and performance of a 45-cm long x-ray deformable mirror

2016 ◽  
Vol 87 (5) ◽  
pp. 052003 ◽  
Author(s):  
Lisa A. Poyneer ◽  
Nicolai F. Brejnholt ◽  
Randall Hill ◽  
Jessie Jackson ◽  
Lisle Hagler ◽  
...  
Keyword(s):  
Deformable Mirror ◽  
X Ray ◽  
And Performance

In-flight verification of the calibration and performance of the ASTRO-H (Hitomi) Soft X-Ray Spectrometer

2016 ◽  
Author(s):  
Maurice A. Leutenegger ◽  
Marc Audard ◽  
Kevin R. Boyce ◽  
Gregory V. Brown ◽  
Meng P. Chiao ◽  
...  
Keyword(s):  
X Ray ◽  
And Performance

Manufacture and performance of blazed soft x-ray transmission gratings for Arcus and Lynx

2021 ◽  
Author(s):  
Ralf K. Heilmann ◽  
Alexander R. Bruccoleri ◽  
Jungki Song ◽  
Mark L. Schattenburg ◽  
Randall K. Smith ◽  
...  
Keyword(s):  
X Ray ◽  
And Performance

scholarly journals In situ observation of phase changes of a silica-supported cobalt catalyst for the Fischer–Tropsch process by the development of a synchrotron-compatible in situ/operando powder X-ray diffraction cell

2018 ◽  
Vol 25 (6) ◽  
pp. 1673-1682 ◽  
Author(s):  
Adam S. Hoffman ◽  
Joseph A. Singh ◽  
Stacey F. Bent ◽  
Simon R. Bare
Keyword(s):  
High Pressure ◽  
Elevated Pressure ◽  
Phase Changes ◽  
In Situ Observation ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
X Ray ◽  
And Performance ◽  
Co Nanoparticles

In situ characterization of catalysts gives direct insight into the working state of the material. Here, the design and performance characteristics of a universal in situ synchrotron-compatible X-ray diffraction cell capable of operation at high temperature and high pressure, 1373 K, and 35 bar, respectively, are reported. Its performance is demonstrated by characterizing a cobalt-based catalyst used in a prototypical high-pressure catalytic reaction, the Fischer–Tropsch synthesis, using X-ray diffraction. Cobalt nanoparticles supported on silica were studied in situ during Fischer–Tropsch catalysis using syngas, H2 and CO, at 723 K and 20 bar. Post reaction, the Co nanoparticles were carburized at elevated pressure, demonstrating an increased rate of carburization compared with atmospheric studies.

A multi-length-scale USAXS/SAXS facility: 10–50 keV small-angle X-ray scattering instrument

2013 ◽  
Vol 46 (5) ◽  
pp. 1508-1512 ◽  
Author(s):  
Byron Freelon ◽  
Kamlesh Suthar ◽  
Jan Ilavsky
Keyword(s):  
Small Angle ◽  
Soft Matter ◽  
High Energy ◽  
X Rays ◽  
X Ray ◽  
X Ray Scattering ◽  
Wide Range ◽  
And Performance ◽  
New Facility ◽  
Ray Scattering

Coupling small-angle X-ray scattering (SAXS) and ultra-small-angle X-ray scattering (USAXS) provides a powerful system of techniques for determining the structural organization of nanostructured materials that exhibit a wide range of characteristic length scales. A new facility that combines high-energy (HE) SAXS and USAXS has been developed at the Advanced Photon Source (APS). The application of X-rays across a range of energies, from 10 to 50 keV, offers opportunities to probe structural behavior at the nano- and microscale. An X-ray setup that can characterize both soft matter or hard matter and high-Zsamples in the solid or solution forms is described. Recent upgrades to the Sector 15ID beamline allow an extension of the X-ray energy range and improved beam intensity. The function and performance of the dedicated USAXS/HE-SAXS ChemMatCARS-APS facility is described.

scholarly journals Design and performance of an X-ray scanning microscope at the Hard X-ray Nanoprobe beamline of NSLS-II

2017 ◽  
Vol 24 (6) ◽  
pp. 1113-1119 ◽  
Author(s):  
E. Nazaretski ◽  
H. Yan ◽  
K. Lauer ◽  
N. Bouet ◽  
X. Huang ◽  
...  
Keyword(s):  
Material Science ◽  
Phase Contrast ◽  
Heat Dissipation ◽  
Regulation System ◽  
Scanning Microscope ◽  
National Synchrotron Light Source ◽  
X Ray ◽  
Synchrotron Light ◽  
Differential Phase Contrast ◽  
And Performance

A hard X-ray scanning microscope installed at the Hard X-ray Nanoprobe beamline of the National Synchrotron Light Source II has been designed, constructed and commissioned. The microscope relies on a compact, high stiffness, low heat dissipation approach and utilizes two types of nanofocusing optics. It is capable of imaging with ∼15 nm × 15 nm spatial resolution using multilayer Laue lenses and 25 nm × 26 nm resolution using zone plates. Fluorescence, diffraction, absorption, differential phase contrast, ptychography and tomography are available as experimental techniques. The microscope is also equipped with a temperature regulation system which allows the temperature of a sample to be varied in the range between 90 K and 1000 K. The constructed instrument is open for general users and offers its capabilities to the material science, battery research and bioscience communities.

The Distribution of Phosphorus in Romano-British Ironwork

1990 ◽  
Vol 185 ◽  
Author(s):  
Alain E. Kaloyeros ◽  
Robert M. Ehrenreich
Keyword(s):  
Electron Microscopy ◽  
Electron Spectroscopy ◽  
Auger Electron ◽  
Materials Analysis ◽  
X Ray ◽  
Transmission Electron ◽  
Depth Study ◽  
Iron Artifacts ◽  
And Performance ◽  
Secondary Ion

AbstractPhosphorus is found to be a common impurity in many of the iron tools and weapons produced during the pre-Roman and Roman Iron Ages of Britain (600 BC - 300 AD). The effects of this impurity on the properties and performance of antiquarian materials is not well understood, however. This paper presents the initial findings of an in-depth study of the distribution, chemistry, and effects of phosphorus in Romano-British ironwork. For this purpose, two Romano-British iron artifacts from the site of Ircheoter, Northamptonshire, were examined using powerful techniques for archeological materials analysis that include electron microprobe, secondary ion mass spectroscopy (SIMS), transmission electron microscopy (TEM) with energydispersive x-ray spectroscopy capabilities (EDXS), and Auger electron spectroscopy (AES). It was found that phosphorous was indeed present in the artifacts. The phosphorus atoms were predominantly segregated at grain boundaries and thus should have led to a lowering of grain boundary cohesion and a degradation in the performance of the tools.

scholarly journals Fabrication of PMMA X-ray Compound Refractive Lenses for the Pohang Light Source and Performance Tests

2007 ◽  
Vol 51 (4) ◽  
pp. 1256 ◽  
Author(s):  
Guk Bae Kim ◽  
Sang Joon Lee ◽  
Jin Pyung Lee ◽  
Jong Hyun Kim ◽  
Suk Sang Chang ◽  
...  
Keyword(s):  
Light Source ◽  
Performance Tests ◽  
X Ray ◽  
Pohang Light Source ◽  
And Performance

scholarly journals From atoms to electrodes: Mesoscale effects in electrochemical conversion

2014 ◽  
Vol 70 (a1) ◽  
pp. C1173-C1173
Author(s):  
Kamila Wiaderek ◽  
Olaf Borkiewicz ◽  
Nathalie Pereira ◽  
Jan Ilavsky ◽  
Glenn Amatucci ◽  
...  
Keyword(s):  
Metallic Iron ◽  
Composite Electrodes ◽  
Iron Compounds ◽  
X Ray ◽  
Electrochemical Conversion ◽  
X Ray Scattering ◽  
Multiple Length Scales ◽  
Nanoscale Structure ◽  
And Performance ◽  
Identical Product

Batteries are complex multicomponent devices wherein mesoscale phenomena–the nanoscale structure and chemistry of different components, and interactions thereof–drive functionality and performance. For example, electron/ion transport within the composite electrodes relies on bi-continuous nanostructuring to form electrically and ionicly conductive paths. Electrochemical conversion of different salts of a given metal yields a common and ostensibly identical product: the zero valent metal. For example, maximal lithiation of iron-based electrodes produces metallic iron nanoparticles for oxide, fluoride, and oxyfluoride electrodes alike. Accordingly, these provide an opportunity to explore the coupling of nanostructure development and anion chemistry, and correlate these with electrochemical performance. We combine synchrotron-based small angle X-ray scattering (SAXS) and pair distribution function (PDF) measurements to probe metallic iron formed by electrochemical conversion of different iron compounds across multiple length-scales and decouple the influence of anion chemistry and reaction temperature on the atomic structure and nanoscale morphology.

scholarly journals Development of a hard X-ray split-and-delay line and performance simulations for two-color pump-probe experiments at the European XFEL

2018 ◽  
Vol 89 (6) ◽  
pp. 063121 ◽  
Author(s):  
W. Lu ◽  
B. Friedrich ◽  
T. Noll ◽  
K. Zhou ◽  
J. Hallmann ◽  
...  
Keyword(s):  
Delay Line ◽  
Pump Probe ◽  
X Ray ◽  
And Performance
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