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- Title
High Quantum Efficiency Rare-Earth-Doped Gd 2 O 2 S:Tb, F Scintillators for Cold Neutron Imaging.
- Authors
Tang, Bin; Yin, Wei; Wang, Qibiao; Chen, Long; Huo, Heyong; Wu, Yang; Yang, Hongchao; Sun, Chenghua; Zhou, Shuyun
- 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.
- Subjects
SCINTILLATORS; QUANTUM efficiency; TERBIUM; NEUTRON radiography; NEUTRONS; HEAVY elements
- Publication
Molecules, 2023, Vol 28, Issue 4, p1815
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules28041815