GdBr3:Ce in glass matrix as nuclear spectroscopy detector

Kang, Zhitao; Rosson, Robert; Barta, Brooke; Han, Chuntan; Nadler, Jason H.; Dorn, Max; Wagner, B. K.; Kahn, Bernd

doi:10.1016/j.radmeas.2012.11.010

Cited by 20 publications

(9 citation statements)

References 10 publications

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“…v,vi,vii,viii With a glass as the matrix material for embedding the nanophosphors, the scintillator screen will be chemically and mechanically stable, and can be easily shaped into large-area plates for applications in adverse environments. ix …”

Section: Introductionmentioning

confidence: 99%

Synthesis and luminescence properties of transparent nanocrystalline GdF3:Tb glass-ceramic scintillator

Lee

Savage

Wagner

et al. 2014

Journal of Luminescence

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Transparent glass-ceramic containing rare-earth doped halide nanocrystals exhibits enhanced luminescence performance. In this study, a glass-ceramic with Tb doped gadolinium fluoride nanocrystals embedded in an aluminosilicate glass matrix is investigated for X-ray imaging applications. The nanocrystalline glass-ceramic scintillator was prepared by a melt-quench method followed by an anneal. The GdF3:Tb nanocrystals precipitated within the oxide glass matrix during the processing and their luminescence and scintillation properties were investigated. In this nanocomposite scintillator system, the incorporation of high atomic number Gd compound into the glass matrix increases the X-ray stopping power of the glass scintillator, and effective energy transfer between Gd3+ and Tb3+ ions in the nanocrystals enhances the scintillation efficiency.

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Section: Introductionmentioning

confidence: 99%

Synthesis and luminescence properties of transparent nanocrystalline GdF3:Tb glass-ceramic scintillator

Lee

Savage

Wagner

et al. 2014

Journal of Luminescence

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“…14 Kang et al first found that GdBr 3 :Ce 3+ nano-GCs have a set of well-defined photopeaks in the energy range of 59.5−2500 keV. 15 Such nano-GCs are granted a fairly large LY of 1700 ph/MeV and an ER of 27%. However, it is out of the question that there exists ample room for performance upgrading.…”

Section: ■ Introductionmentioning

confidence: 99%

“…When the sizes of NCs are much smaller (preferably < 30 nm) than the wavelengths of the visible spectrum, the nano-GCs are capable of maintaining good transparency even when a considerable amount of NCs is embedded (Figure (b)) . Kang et al first found that GdBr 3 :Ce 3+ nano-GCs have a set of well-defined photopeaks in the energy range of 59.5–2500 keV . Such nano-GCs are granted a fairly large LY of 1700 ph/MeV and an ER of 27%.…”

Section: Introductionmentioning

confidence: 99%

Band Gap and Defect Engineering Enhanced Scintillation from Ce³⁺-Doped Nanoglass Containing Mixed-Type Fluoride Nanocrystals

Luo,

Jing,

Hua

et al. 2023

ACS Appl. Mater. Interfaces

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Much can be learned from the research and development of scintillator crystals for improving the scintillation performance of glasses. Relying on the concept of "embedding crystalline order in glass", we have demonstrated that the scintillation properties of Ce 3+ -doped nanoglass composites (nano-GCs) can be optimized via the synergistic effects of Gd 3+ -sublattice sensitization and band-gap engineering. The nano-GCs host a large volume fraction of KY x Gd 1−x F 4 mixed-type fluoride nanocrystals (NCs) and still retain reasonably good transparency at Ce 3+ -emitting wavelengths. The light yield of 3455 ± 20 ph/MeV is found, which is the largest value ever reported in fluoride NC-embedded nano-GCs. A comprehensive study is given on the highly selective doping of Ce 3+ in the NCs and its positive effect on the scintillation properties. The favorable influence of the Y 3+ /Gd 3+ mixing on the suppression of defects is accounted for by density functional theory and borne out experimentally. As a proof-ofconcept, X-ray imaging with a good spatial resolution (7.9 lp/mm) is demonstrated by employing Ce 3+ -doped nano-GCs. The superior radiation hardness, repeatability, and thermal stability of the designed scintillators bode well for their long-term practical applications.

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“…Although no glass-ceramics are widely used as scintillators and dosimetric materials, a few interesting studies have been performed. For example, the germanate glass-ceramic containing Bi 4 Ge 3 O 12 crystallites, (48) the f luorophosphate glass-ceramic containing CeF 3 crystallites, (49) oxyfluoride glass-ceramics containing CaF 2 :Eu crystallites, (50,51) and oxyfluoride glass-ceramics containing CeBr 3 crystallites (52) have been studied. Our group is also focusing on glass-ceramics as scintillators and dosimetric materials, and we have already shown an increase in the scintillation and TL intensities of 20SrO-20BaO-40Nb 2 O 5 -20P 2 O 5 glass upon its crystallization.…”

Section: Introductionmentioning

confidence: 99%

Scintillation Properties of Non-doped and Pr-doped BaO–B2O3–SiO2 Glasses and Glass-ceramics

Kawaguchi¹,

Masai²,

Akatsuka³

et al. 2021

Sensors and Materials

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We have studied the scintillation properties of non-doped and Pr-doped BaO-B 2 O 3 -SiO 2 glasses and glass-ceramics. The glass transition temperature (T g ), the temperature of crystallization onset (T x ), and the crystallization peak (T p ) were determined by differential thermal analysis. The glass-ceramics were obtained by heating at three different temperatures (T g + 50 °C, T x , and T p ). We confirmed that the X-ray diffraction peaks can be ascribed to the BaSiO 3 crystalline phase in the glass-ceramic samples. In the X-ray-induced scintillation spectra, we observed the intrinsic luminescence of the host glass and luminescence due to the 4f-4f transition of Pr 3+ ions. In addition, the 1% Pr-doped BaO-B 2 O 3 -SiO 2 glass-ceramic with heating at T g + 50 °C clearly showed luminescence in the wavelength range from 250 to 350 nm under X-ray excitation. Its photoluminescence (PL) decay time was estimated to be 26.28 ns and its luminescence is considered to be due to the 5f-4f transition of Pr 3+ ions.

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GdBr3:Ce in glass matrix as nuclear spectroscopy detector

Cited by 20 publications

References 10 publications

Synthesis and luminescence properties of transparent nanocrystalline GdF3:Tb glass-ceramic scintillator

Synthesis and luminescence properties of transparent nanocrystalline GdF3:Tb glass-ceramic scintillator

Band Gap and Defect Engineering Enhanced Scintillation from Ce³⁺-Doped Nanoglass Containing Mixed-Type Fluoride Nanocrystals

Scintillation Properties of Non-doped and Pr-doped BaO–B2O3–SiO2 Glasses and Glass-ceramics

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GdBr3:Ce in glass matrix as nuclear spectroscopy detector

Cited by 20 publications

References 10 publications

Synthesis and luminescence properties of transparent nanocrystalline GdF3:Tb glass-ceramic scintillator

Synthesis and luminescence properties of transparent nanocrystalline GdF3:Tb glass-ceramic scintillator

Band Gap and Defect Engineering Enhanced Scintillation from Ce3+-Doped Nanoglass Containing Mixed-Type Fluoride Nanocrystals

Scintillation Properties of Non-doped and Pr-doped BaO–B2O3–SiO2 Glasses and Glass-ceramics

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Band Gap and Defect Engineering Enhanced Scintillation from Ce³⁺-Doped Nanoglass Containing Mixed-Type Fluoride Nanocrystals