TU-G-207-03: High Spatial Resolution and High Sensitivity X-Ray Fluorescence Imaging

2015 ◽  
Vol 42 (6Part35) ◽  
pp. 3635-3635
Author(s):  
L. Xing
Keyword(s):  
Fluorescence Imaging ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
High Sensitivity ◽  
X Ray

Applications of a Laboratory X-ray Micropsobe to Materials Analysis

1988 ◽  
Vol 32 ◽  
pp. 115-120 ◽  
Author(s):  
D. A. Carpenter ◽  
M. A. Taylor ◽  
C. E. Holcombe
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
High Sensitivity ◽  
Specimen Preparation ◽  
X Rays ◽  
Glass Capillary ◽  
Materials Analysis ◽  
X Ray ◽  
Small Glass

A laboratory-based X-ray microprobe, composed of a high-brilliance microfocus X-ray tube, coupled with a small glass capillary, has been developed for materials applications. Because of total external reflectance of X rays from the smooth inside bore of the glass capillary, the microprobe has a high sensitivity as well as a high spatial resolution. The use of X rays to excite elemental fluorescence offers the advantages of good peak-to-background, the ability to operate in air, and minimal specimen preparation. In addition, the development of laboratory-based instrumentation has been of Interest recently because of greater accessibility when compared with synchrotron X-ray microprobes.

scholarly journals Instrumentation for the Measurement of High Energy Phenomena on NASA Spacecraft

1971 ◽  
Vol 41 ◽  
pp. 134-134
Author(s):  
Albert G. Opp ◽  
Nancy G. Roman
Keyword(s):  
Spatial Resolution ◽  
Spectral Distribution ◽  
High Spatial Resolution ◽  
High Sensitivity ◽  
High Energy ◽  
Temporal Variations ◽  
X Ray ◽  
Sky Survey ◽  
Beryllium Window ◽  
Proportional Counters

High energy astrophysical observations supported by the National Aeronautics and Space Administration will be conducted primarily from the Small Astronomy Satellites (SAS) and the High Energy Astronomy Observatories (HEAO). At the present time, three Small Astronomy Satellites have been approved for flight. The first (SAS A) will carry a set of collimated proportional counters to conduct a high sensitivity, high spatial resolution, all sky survey for X-ray sources, to search for temporal variations in the source intensity, and to measure the spectral distribution of sources in the energy range 1 to 20 keV. The spacecraft will carry two collimator systems of 1 by 10 deg and 10 by 10 deg fullwidth. The proportional counters are gas-filled beryllium window tubes. SAS A is planned for launch in late 1970.

scholarly journals High-Spatial-Resolution Bone Densitometry with Dual-Energy X-ray Absorptiometric Region-free Analysis

Radiology ◽  
2015 ◽  
Vol 275 (1) ◽  
pp. 310-310 ◽  
Author(s):  
Richard M. Morris ◽  
Lang Yang ◽  
Miguel A. Martín-Fernández ◽  
Jose M. Pozo ◽  
Alejandro F. Frangi ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Bone Densitometry ◽  
High Spatial Resolution ◽  
Dual Energy ◽  
X Ray

scholarly journals ZnWO4 Nanoparticle Scintillators for High Resolution X-ray Imaging

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1721
Author(s):  
Heon Yong Jeong ◽  
Hyung San Lim ◽  
Ju Hyuk Lee ◽  
Jun Heo ◽  
Hyun Nam Kim ◽  
...  
Keyword(s):  
Particle Size ◽  
Zinc Oxide ◽  
High Resolution ◽  
Tungsten Oxide ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
X Ray ◽  
X Ray Imaging ◽  
Average Size ◽  
And Tungsten

The effect of scintillator particle size on high-resolution X-ray imaging was studied using zinc tungstate (ZnWO4) particles. The ZnWO4 particles were fabricated through a solid-state reaction between zinc oxide and tungsten oxide at various temperatures, producing particles with average sizes of 176.4 nm, 626.7 nm, and 2.127 μm; the zinc oxide and tungsten oxide were created using anodization. The spatial resolutions of high-resolution X-ray images, obtained from utilizing the fabricated particles, were determined: particles with the average size of 176.4 nm produced the highest spatial resolution. The results demonstrate that high spatial resolution can be obtained from ZnWO4 nanoparticle scintillators that minimize optical diffusion by having a particle size that is smaller than the emission wavelength.

APD-based x-ray imaging telescope using Fresnel zone plates for extremely high spatial resolution

2005 ◽  
Author(s):  
Michael R. Squillante ◽  
Richard A. Myers ◽  
Mitchell Woodring ◽  
James F. Christian ◽  
Frank Robertson ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Fresnel Zone ◽  
Fresnel Zone Plates ◽  
X Ray ◽  
Zone Plates ◽  
X Ray Imaging ◽  
Imaging Telescope

High spatial resolution x-ray scintillator with pixel the silicon separator

2021 ◽  
Author(s):  
Toru Aoki ◽  
Kento Tabata ◽  
Ryota Okate ◽  
Shailendra Singh ◽  
Hiroki Kase ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
X Ray
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