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

SUBMITTER: Tang B 

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

REPOSITORIES: biostudies-literature