Results 251 to 260 of about 47,052 (302)

The origin of x-ray luminescence from CdTe nanoparticles in CdTe∕BaFBr:Eu2+ nanocomposite phosphors [PDF]

Journal of Applied Physics, 2006
X-ray luminescence from CdTe nanoparticles is observed when CdTe nanoparticles are encapsulated into BaFBr:Eu2+ phosphors. In contrast, negligible x-ray luminescence is observed from the unencapsulated nanoparticles, either in solution or in solid form ...
Alan G Joly, Jan-Olle Malm, Jan-Olov Bovin   +2 more
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High-resolution X-ray luminescence extension imaging

Nature, 2021
Current X-ray imaging technologies involving flat-panel detectors have difficulty in imaging three-dimensional objects because fabrication of large-area, flexible, silicon-based photodetectors on highly curved surfaces remains a challenge1-3. Here we demonstrate ultralong-lived X-ray trapping for flat-panel-free, high-resolution, three-dimensional ...
Xiangyu Ou, Xian Qin, Bolong Huang, Jie Zan, Qinxia Wu, Zhongzhu Hong, Lili Xie, Hongyu Bian, Zhigao Yi, Xiaofeng Chen, Yiming Wu, Xiaorong Song, Juan Li, Qiushui Chen, Huanghao Yang, Xiaogang Liu   +15 more
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Advancing X-ray Luminescence for Imaging, Biosensing, and Theragnostics

Accounts of Chemical Research, 2022
X-ray luminescence is an optical phenomenon in which chemical compounds known as scintillators can emit short-wavelength light upon the excitation of X-ray photons. Since X-rays exhibit well-recognized advantages of deep penetration toward tissues and a minimal autofluorescence background in biological samples, X-ray luminescence has been increasingly ...
Zhongzhu Hong, Zhaowei Chen, Qiushui Chen, Huanghao Yang   +3 more
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Fast X-Ray Luminescence Computed Tomography Imaging

IEEE Transactions on Biomedical Engineering, 2014
X-ray luminescence computed tomography (XLCT) opens new possibilities to perform molecular imaging with X-ray. However, challenges remain in dynamic XLCT imaging, where short scan time, good spatial resolution, and whole-body field of view should be considered simultaneously.
Xin Liu, Qimei Liao, Hongkai Wang
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X-ray induced luminescence of LiNbO3

Solid State Communications, 1981
Abstract X-ray induced luminescence has been observed in pure as well as Ni, Cu and Eu-doped LiNbO3. The emission spectrum for both, pure congruently grown and doped samples, consists of a well-defined band peaked at ≈425 nm. The shape and height of this band is also independent of the amount of radiation-induced coloring in the crystal.
L. Arizmendi, J.M. Cabrera, F. Agulló-López   +2 more
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Selected Area X-Ray Luminescence Spectroscopy with the X-Ray Milliprobe

Applied Spectroscopy, 1972
Cathodoluminescence and x-ray luminescence spectroscopy have been widely utilized in the determination of rare earth elements,1–4 decay curves and color centers,5–7 thermoluminescence activators,8–9 mineralogical and geochemical studies,7, 10–12 and basic phosphor properties ...
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X-ray stimulated luminescence in MgO

Journal of Luminescence, 1979
Studies have been made of the emission spectrum of MgO crystals induced by X-irradiation at 90 K. Two bands (half-widths ∼0.8 eV) were observed to peak at 4.95 and 3.2 eV, respectively, in high purity crystals. Doping with 100 ppm or greater of Fe, Co, Cr, Cu, Mn, and Ni suppressed the luminescence, though in the MgO:Ni crystal the 2.3 eV Ni2+ band due
K.H. Lee, J.H. Crawford
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X-ray luminescence of AgCl crystals

Czechoslovak Journal of Physics, 1962
Spectral composition of x-ray induced luminescence in AgCl crystals was studied. The qualitative course of radiation intensity was plotted as a function of wave length. The curve was obtained by photometric measurements on crystals from different growth groups. The curves coincide in shape and position of the main and lateral positions.
Z. Berger, E. Vavřinec
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Temperature dependence of x‐ray induced luminescence from medical x‐ray screens

Medical Physics, 1987
Texts in diagnostic radiography give rules for adjustment of exposure parameters to compensate for the effect of temperature on the efficiency of film–screen combinations. These rules are appropriate for traditional phosphors, such as calcium tungstate (CaWO4) and lead barium sulfate (BaSO4:Pb) but may not be applicable to newer screens in current use ...
D R, Shearer, L E, Rowe
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X-Ray-Excited Optical Luminescence

2017
X-ray-excited optical luminescence (XEOL) is a spectroscopic technic historically related to scintillator materials and X-ray phosphors.
Cebim, M. A., Oliveira, H. H.S., Krauser, M. O., Davolos, M. R.   +3 more
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