scholarly journals All-inorganic Perovskite Nanocrystals: New Generation Scintillators for High-Resolution X-Ray Imaging

2022 ◽  
Author(s):  
Lu Lu ◽  
Mingzi Sun ◽  
Tong Wu ◽  
Qiuyang Lu ◽  
Baian Chen ◽  
...  
Keyword(s):  
High Resolution ◽  
Visible Light ◽  
High Energy ◽  
X Rays ◽  
Inorganic Perovskite ◽  
Perovskite Nanocrystals ◽  
X Ray ◽  
X Ray Imaging ◽  
New Generation

With super strong penetrability, high-energy X-rays can be applied to probe the inner structure of target objects under nondestructive situations. Scintillation materials can down-convert X-rays into visible light, enabling the...

Three Dimensional X-Ray Computed Tomography in Materials Science

MRS Bulletin ◽  
1988 ◽  
Vol 13 (1) ◽  
pp. 13-18 ◽  
Author(s):  
J.H. Kinney ◽  
Q.C. Johnson ◽  
U. Bonse ◽  
M.C. Nichols ◽  
R.A. Saroyan ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Sample Preparation ◽  
Visible Light ◽  
Three Dimensional ◽  
Materials Characterization ◽  
Imaging Technology ◽  
X Ray ◽  
X Ray Imaging ◽  
Visible Light Imaging

Imaging is the cornerstone of materials characterization. Until the middle of the present century, visible light imaging provided much of the information about materials. Though visible light imaging still plays an extremely important role in characterization, relatively low spatial resolution and lack of chemical sensitivity and specificity limit its usefulness.The discovery of x-rays and electrons led to a major advance in imaging technology. X-ray diffraction and electron microscopy allowed us to characterize the atomic structure of materials. Many materials vital to our high technology economy and defense owe their existence to the understanding of materials structure brought about with these high-resolution methods.Electron microscopy is an essential tool for materials characterization. Unfortunately, electron imaging is always destructive due to the sample preparation that must be done prior to imaging. Furthermore, electron microscopy only provides information about the surface of a sample. Three dimensional information, of great interest in characterizing many new materials, can be obtained only by time consuming sectioning of an object.The development of intense synchrotron light sources in addition to the improvements in solid state imaging technology is revolutionizing materials characterization. High resolution x-ray imaging is a potentially valuable tool for materials characterization. The large depth of x-ray penetration, as well as the sensitivity of absorption crosssections to atomic chemistry, allows x-ray imaging to characterize the chemistry of internal structures in macroscopic objects with little sample preparation. X-ray imaging complements other imaging modalities, such as electron microscopy, in that it can be performed nondestructively on metals and insulators alike.

High-Stable X-ray Imaging from All-Inorganic Perovskite Nanocrystals under a High Dose Radiation

2020 ◽  
Vol 11 (21) ◽  
pp. 9203-9209 ◽  
Author(s):  
Liuli Yang ◽  
Hao Zhang ◽  
Min Zhou ◽  
Lei Zhao ◽  
Weiqing Chen ◽  
...  
Keyword(s):  
High Dose ◽  
Inorganic Perovskite ◽  
Perovskite Nanocrystals ◽  
X Ray ◽  
X Ray Imaging ◽  
Dose Radiation

scholarly journals High-energy, high-resolution x-ray imaging for metallic cultural heritages

AIP Advances ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 105122
Author(s):  
Masato Hoshino ◽  
Kentaro Uesugi ◽  
Ryuji Shikaku ◽  
Naoto Yagi
Keyword(s):  
High Resolution ◽  
High Energy ◽  
X Ray ◽  
X Ray Imaging

scholarly journals PULSAR WIND NEBULAE MODELING

2014 ◽  
Vol 28 ◽  
pp. 1460162 ◽  
Author(s):  
NICCOLÒ BUCCIANTINI
Keyword(s):  
High Resolution ◽  
High Energy ◽  
Clear Understanding ◽  
Strong Impact ◽  
Pulsar Magnetosphere ◽  
Pulsar Wind Nebulae ◽  
X Ray ◽  
X Ray Imaging ◽  
Dynamical Properties ◽  
Pulsar Wind

Pulsar Wind Nebulae (PWNe) are ideal astrophysical laboratories where high energy relativistic phenomena can be investigated. They are close, well resolved in our observations, and the knowledge derived in their study has a strong impact in many other fields, from AGNs to GRBs. Yet there are still unresolved issues, that prevent us from a full clear understanding of these objects. The lucky combination of high resolution X-ray imaging and numerical codes to handle the outflow and dynamical properties of relativistic MHD, has opened a new avenue of investigation that has lead to interesting progresses in the last years. Despite all of this, we do not understand yet how particles are accelerated, and the functioning of the pulsar wind and pulsar magnetosphere, that power PWNe. I will review what is now commonly known as the MHD paradigm, and in particular I will focus on various approaches that have been and are currently used to model these systems. For each I will highlight its advantages, limitations, and degree of applicability.

scholarly journals Beamline P02.1 at PETRA III for high-resolution and high-energy powder diffraction

2015 ◽  
Vol 22 (3) ◽  
pp. 675-687 ◽  
Author(s):  
Ann-Christin Dippel ◽  
Hanns-Peter Liermann ◽  
Jan Torben Delitz ◽  
Peter Walter ◽  
Horst Schulte-Schrepping ◽  
...  
Keyword(s):  
High Resolution ◽  
Powder Diffraction ◽  
Early Stage ◽  
Beam Quality ◽  
High Energy ◽  
Real Space ◽  
Photon Flux ◽  
X Rays ◽  
Ambient Conditions ◽  
X Ray

Powder X-ray diffraction techniques largely benefit from the superior beam quality provided by high-brilliance synchrotron light sources in terms of photon flux and angular resolution. The High Resolution Powder Diffraction Beamline P02.1 at the storage ring PETRA III (DESY, Hamburg, Germany) combines these strengths with the power of high-energy X-rays for materials research. The beamline is operated at a fixed photon energy of 60 keV (0.207 Å wavelength). A high-resolution monochromator generates the highly collimated X-ray beam of narrow energy bandwidth. Classic crystal structure determination in reciprocal space at standard and non-ambient conditions are an essential part of the scientific scope as well as total scattering analysis using the real space information of the pair distribution function. Both methods are complemented byin situcapabilities with time-resolution in the sub-second regime owing to the high beam intensity and the advanced detector technology for high-energy X-rays. P02.1's efficiency in solving chemical and crystallographic problems is illustrated by presenting key experiments that were carried out within these fields during the early stage of beamline operation.

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.

High-energy, high-resolution x-ray imaging on the Trident short-pulse laser facility

2008 ◽  
Vol 79 (10) ◽  
pp. 10E905 ◽  
Author(s):  
J. Workman ◽  
J. Cobble ◽  
K. Flippo ◽  
D. C. Gautier ◽  
S. Letzring
Keyword(s):  
High Resolution ◽  
Pulse Laser ◽  
Short Pulse ◽  
High Energy ◽  
X Ray ◽  
Short Pulse Laser ◽  
X Ray Imaging ◽  
Laser Facility

scholarly journals HIGH-RESOLUTION HIGH ENERGY X-RAY DIFFRACTION STUDIES OF CHARGE ORDERING IN CMR MANGANITES AND NICKELATES

2000 ◽  
Vol 14 (29n31) ◽  
pp. 3753-3758 ◽  
Author(s):  
STUART B. WILKINS ◽  
PETER D. HATTON ◽  
KLAUS-DIETER LISS ◽  
M. OHLER ◽  
T. KATSUFUJI ◽  
...  
Keyword(s):  
High Resolution ◽  
High Energy ◽  
Charge Ordering ◽  
X Rays ◽  
X Ray Diffraction ◽  
Strong Electron ◽  
Near Surface ◽  
Correlation Lengths ◽  
X Ray ◽  
Charge Modulations

High-resolution, high-energy, X-ray diffraction results are presented for the study of weak charge ordering phenomenon. By utilizing X-rays in the 100 keV region the dramatic increase in the penetration depth allows for both bulk-sensitive and high-resolution measurements to be made. The strontium doped La 2 NiO 4 system is a prototypical system in the understanding of strong electron-phonon coupling, and the resultant effects on material properties. At doping levels of 1/3 and 1/2 commensurate charge modulations are observed indicating real-space charge stripes. We have measured the correlation lengths of these charge stripes using both 100 keV X-rays and 8.3 keV X-rays. In comparing our results we have observed that the charge stripes appear to be well correlated in the near-surface region with correlation lengths ξ≈2400Å. However, our bulk sensitive measurements show that the charge stripes appear in a possible stripe glass phase with a correlation length of only ξ≈300Å. Our measurements on the 3D charge order manganite system Nd 0.5 Sr 0.5 MnO 3 show that the charge ordering appears to be well correlated in the bulk of the sample in contrast to our nickelate results.

scholarly journals Large field-of-view X-ray imaging by using a Fresnel zone plate

2012 ◽  
Vol 30 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Xiao-Fang Wang ◽  
Jin-Yu Wang ◽  
Xiao-Hu Chen ◽  
Xin-Gong Chen ◽  
Lai Wei
Keyword(s):  
High Resolution ◽  
Fresnel Zone ◽  
Numerical Study ◽  
Field Of View ◽  
Zone Plate ◽  
Large Field ◽  
Fresnel Zone Plate ◽  
X Rays ◽  
X Ray ◽  
X Ray Imaging

AbstractTo diagnose the implosion of a laser-driven-fusion target such as the symmetry, the hydrodynamic instability at the interface, a high-resolution, large field-of-view kilo-electron-volt X-ray imaging is required. A Kirkpatrick-Baez (K-B) microscope is commonly used, but its field of view is limited to a few hundred microns as the resolution decreases rapidly with the increase of the field of view. A higher resolution could be realized by using a Fresnel zone plate (FZP) for imaging. Presented in this work is a numerical study on the imaging properties of an FZP at Ti-Kα wavelength of 0.275 nm, and a comparison to a K-B imager. It is found that the FZP can realize not only a resolution better than 1 µm, but also a field-of-view larger than 20 mm when the FZP is illuminated by X-rays of spectral bandwidth less than 1.75%. These results indicate the feasibility of applying the FZP in high-resolution, large field-of-view X-ray imaging.

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