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High Quantum Efficiency Rare-Earth-Doped Gd2O2S:Tb, F Scintillators for Cold Neutron Imaging.

ABSTRACT: High-resolution neutron radiography provides novel and stirring opportunities to investigate the structures of light elements encased by heavy elements. For this study, a series of Gd2O2S:Tb, F particles were prepared using a high-temperature solid phase method and then used as a scintillation screen. Upon reaching 293 nm excitation, a bright green emission originated from the Tb3+ luminescence center. The level of F doping affected the fluorescence intensity. When the F doping level was 8 mol%, the fluorescence intensity was at its highest. The absolute quantum yield of the synthesized particles reached as high as 77.21%. Gd2O2S:Tb, F particles were applied to the scintillation screen, showing a resolution on the neutron radiograph as high as 12 μm. These results suggest that the highly efficient Gd2O2S:Tb, F particles are promising scintillators for the purposes of cold neutron radiography.

SUBMITTER: Tang B 

PROVIDER: S-EPMC9959274 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature

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High Quantum Efficiency Rare-Earth-Doped Gd<sub>2</sub>O<sub>2</sub>S:Tb, F Scintillators for Cold Neutron Imaging.

Tang Bin B   Yin Wei W   Wang Qibiao Q   Chen Long L   Huo Heyong H   Wu Yang Y   Yang Hongchao H   Sun Chenghua C   Zhou Shuyun S  

Molecules (Basel, Switzerland) 20230215 4

High-resolution neutron radiography provides novel and stirring opportunities to investigate the structures of light elements encased by heavy elements. For this study, a series of Gd<sub>2</sub>O<sub>2</sub>S:Tb, F particles were prepared using a high-temperature solid phase method and then used as a scintillation screen. Upon reaching 293 nm excitation, a bright green emission originated from the Tb<sup>3+</sup> luminescence center. The level of F doping affected the fluorescence intensity. Wh  ...[more]

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