Fast Ce,Ca:LuAG scintillation ceramics for HEP: Fabrication, characterization and computation

0575197 - FZÚ 2024 RIV US eng J - Journal Article
Zhu, D. - Chen, X. - Cai, J. - Beitlerová, Alena - Kučerková, Romana - Chewpraditkul, W. - Nikl, Martin - Li, J.
Fast Ce,Ca:LuAG scintillation ceramics for HEP: Fabrication, characterization and computation.
Journal of the American Ceramic Society. Roč. 106, č. 11 (2023), s. 6787-6800. ISSN 0002-7820. E-ISSN 1551-2916
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GA21-17731S
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : Ce,Ca:LuAG ceramics * doping concentration * first-principles calculations * scintillation performance
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.9, year: 2022
Method of publishing: Limited access
https://doi.org/10.1111/jace.19309

High-energy physics community is looking for a hard, fast, and low-cost scintillation material, and Ce:Lu3Al5O12 (Ce:LuAG) ceramic is one of the competitive candidates. This work presents Ce,Ca:LuAG scintillation ceramics with good optical quality, and the influence ofCe and Ca concentrations on optical and scintillation propertieswas fully analyzed.At relatively low level of Ce concentration, the less Ca2+ content is needed to achieve a significant intensity increase in fast scintillation component while maintaining a relatively high light yield (LY). The introduction of only 0.1 at% Ca2+ could increase the LY0.5 μs/LY3.0 μs from 79.9% to 96.1% in Ce,Ca:LuAG ceramics of 0.1 at% Ce. First-principles investigations are further performed to reveal the tuning mechanisms of the scintillation properties of LuAG by Ce and Ca codoping. We show that the Fermi level shifts down with Ca codoping, which increases the Ce4+ content.
Permanent Link: https://hdl.handle.net/11104/0345032