scholarly journals Construction of a Wide-range High-resolution Beamline BL05 in NewSUBARU for Soft X-ray Spectroscopic Analysis on Industrial Materials

2013 ◽  
Vol 425 (13) ◽  
pp. 132005 ◽  
Author(s):  
K Kanda ◽  
T Hasegawa ◽  
M Uemura ◽  
M Niibe ◽  
Y Haruyama ◽  
...  
Keyword(s):  
High Resolution ◽  
Spectroscopic Analysis ◽  
X Ray ◽  
Wide Range ◽  
Industrial Materials

scholarly journals Shadow monochromatic backlighting: Large-field high resolution X-ray shadowgraphy with improved spectral tunability

2001 ◽  
Vol 19 (2) ◽  
pp. 285-293 ◽  
Author(s):  
T.A. PIKUZ ◽  
A. YA. FAENOV ◽  
M. FRAENKEL ◽  
A. ZIGLER ◽  
F. FLORA ◽  
...  
Keyword(s):  
High Resolution ◽  
High Spatial Resolution ◽  
Field Of View ◽  
Large Field ◽  
X Ray ◽  
Traditional Scheme ◽  
Wide Range ◽  
Wide Wavelength Range ◽  
Bent Crystals ◽  
First Time

The shadow monochromatic backlighting (SMB) scheme, a modification of the well-known soft X-ray monochromatic backlighting scheme, is proposed. It is based on a spherical crystal as the dispersive element and extends the traditional scheme by allowing one to work with a wide range of Bragg angles and thus in a wide spectral range. The advantages of the new scheme are demonstrated experimentally and supported numerically by ray-tracing simulations. In the experiments, the X-ray backlighter source is a laser-produced plasma, created by the interaction of an ultrashort pulse, Ti:Sapphire laser (120 fs, 3–5 mJ, 1016 W/cm2 on target) or a short wavelength XeCl laser (10 ns, 1–2 J, 1013 W/cm2 on target) with various solid targets (Dy, Ni + Cr, BaF2). In both experiments, the X-ray sources are well localized spatially (∼20 μm) and are spectrally tunable in a relatively wide wavelength range (λ = 8–15 Å). High quality monochromatic (δλ/λ ∼ 10−5–10−3) images with high spatial resolution (up to ∼4 μm) over a large field of view (a few square millimeters) were obtained. Utilization of spherically bent crystals to obtain high-resolution, large field, monochromatic images in a wide range of Bragg angles (35° < Θ < 90°) is demonstrated for the first time.

scholarly journals Measurement of three-dimensional displacement field in piled embankments using synchrotron X-ray tomography

2019 ◽  
Vol 56 (6) ◽  
pp. 885-892 ◽  
Author(s):  
Louis King ◽  
Abdelmalek Bouazza ◽  
Anton Maksimenko ◽  
Will P. Gates ◽  
Stephen Dubsky
Keyword(s):  
High Resolution ◽  
Imaging Techniques ◽  
Three Dimensional ◽  
Physical Models ◽  
Scale Model ◽  
Small Scale ◽  
Full Field ◽  
X Ray ◽  
Wide Range ◽  
Piled Embankments

The measurement of displacement fields by nondestructive imaging techniques opens up the potential to study the pre-failure mechanisms of a wide range of geotechnical problems within physical models. With the advancement of imaging technologies, it has become possible to achieve high-resolution three-dimensional computed tomography volumes of relatively large samples, which may have previously resulted in excessively long scan times or significant imaging artefacts. Imaging of small-scale model piled embankments (142 mm diameter) comprising sand was undertaken using the imaging and medical beamline at the Australian Synchrotron. The monochromatic X-ray beam produced high-resolution reconstructed volumes with a fine texture due to the size and mineralogy of the sand grains as well as the phase contrast enhancement achieved by the monochromatic X-ray beam. The reconstructed volumes were well suited to the application of digital volume correlation, which utilizes cross-correlation techniques to estimate three-dimensional full-field displacement vectors. The output provides insight into the strain localizations that develop within piled embankments and an example of how advanced imaging techniques can be utilized to study the kinematics of physical models.

High Resolution EM Study of Wüstite

1974 ◽  
Vol 32 ◽  
pp. 352-353 ◽  
Author(s):  
Sumio Iijima
Keyword(s):  
High Resolution ◽  
Diffraction Method ◽  
X Ray Diffraction ◽  
Repeat Distance ◽  
X Ray ◽  
Integral Number ◽  
Deviation From Stoichiometry ◽  
Wide Range ◽  
Cation Sites ◽  
Range Of Variation

Wüstite (Fe1-x0) has recieved considerable attention because of a wide range of variation in x. The deviation from stoichiometry is known to be due to vacancies on cation sites. Koch and Cohen, having studied this material in detail using an X-ray diffraction method, concluded that the defects present in Fe1-x0 are clusters of 13 octahedral vacancies and 4 tetrahedral ions. These clusters are arranged periodically but the repeat distance in the [100] direction is not an integral number of structures of the basic NaCl-type. The observed spacing of superstructure peaks may correspond to the average repeat distance.

Analysis and Correction of Heating Effect on High Resolution and Wide Range Soft X-Ray Beamline

2014 ◽  
Vol 51 (7) ◽  
pp. 073401
Author(s):  
石应波 Shi Yingbo ◽  
王勇 Wang Yong ◽  
邰仁忠 Tai Renzhong ◽  
丁洪 Ding Hong
Keyword(s):  
High Resolution ◽  
Heating Effect ◽  
X Ray ◽  
Wide Range

High-resolution X-ray emission spectroscopy with transition-edge sensors: present performance and future potential

2015 ◽  
Vol 22 (3) ◽  
pp. 766-775 ◽  
Author(s):  
J. Uhlig ◽  
W. B. Doriese ◽  
J. W. Fowler ◽  
D. S. Swetz ◽  
C. Jaye ◽  
...  
Keyword(s):  
High Resolution ◽  
Emission Spectroscopy ◽  
Electronic Configuration ◽  
Transition Edge Sensors ◽  
Complex Compounds ◽  
Superconducting Transition ◽  
X Ray ◽  
Transition Edge ◽  
Wide Range ◽  
Low Efficiency

X-ray emission spectroscopy (XES) is a powerful element-selective tool to analyze the oxidation states of atoms in complex compounds, determine their electronic configuration, and identify unknown compounds in challenging environments. Until now the low efficiency of wavelength-dispersive X-ray spectrometer technology has limited the use of XES, especially in combination with weaker laboratory X-ray sources. More efficient energy-dispersive detectors have either insufficient energy resolution because of the statistical limits described by Fano or too low counting rates to be of practical use. This paper updates an approach to high-resolution X-ray emission spectroscopy that uses a microcalorimeter detector array of superconducting transition-edge sensors (TESs). TES arrays are discussed and compared with conventional methods, and shown under which circumstances they are superior. It is also shown that a TES array can be integrated into a table-top time-resolved X-ray source and a soft X-ray synchrotron beamline to perform emission spectroscopy with good chemical sensitivity over a very wide range of energies.

scholarly journals High-resolution multicontrast tomography with an X-ray microarray anode–structured target source

2021 ◽  
Vol 118 (25) ◽  
pp. e2103126118
Author(s):  
Guibin Zan ◽  
Sheraz Gul ◽  
Jin Zhang ◽  
Wei Zhao ◽  
Sylvia Lewis ◽  
...  
Keyword(s):  
High Resolution ◽  
Biomedical Applications ◽  
Structural Information ◽  
High Energy ◽  
X Ray ◽  
Grating Fabrication ◽  
X Ray Imaging ◽  
Diamond Substrate ◽  
Wide Range ◽  
Target Source

Multicontrast X-ray imaging with high resolution and sensitivity using Talbot–Lau interferometry (TLI) offers unique imaging capabilities that are important to a wide range of applications, including the study of morphological features with different physical properties in biological specimens. The conventional X-ray TLI approach relies on an absorption grating to create an array of micrometer-sized X-ray sources, posing numerous limitations, including technical challenges associated with grating fabrication for high-energy operations. We overcome these limitations by developing a TLI system with a microarray anode–structured target (MAAST) source. The MAAST features an array of precisely controlled microstructured metal inserts embedded in a diamond substrate. Using this TLI system, tomography of a Drum fish tooth with high resolution and tri-contrast (absorption, phase, and scattering) reveals useful complementary structural information that is inaccessible otherwise. The results highlight the exceptional capability of high-resolution multicontrast X-ray tomography empowered by the MAAST-based TLI method in biomedical applications.

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