Influence of cerium doping concentration on the optical properties of Ce, Mg:LuAG scintillation ceramics

0492155 - FZÚ 2019 RIV GB eng J - Journal Article
Chen, X. - Hu, Z. - Cao, M. - Hu, C. - Liu, S. - Chen, H. - Shi, Y. - Kou, H. - Xie, T. - Vedda, A. - Jarý, Vítězslav - Kučerková, Romana - Nikl, Martin - Li, J.
Influence of cerium doping concentration on the optical properties of Ce, Mg:LuAG scintillation ceramics.
Journal of the European Ceramic Society. Roč. 38, č. 9 (2018), s. 3246-3254. ISSN 0955-2219. E-ISSN 1873-619X
R&D Projects: GA ČR GA16-15569S
EU Projects: European Commission(XE) 690599 - ASCIMAT
Grant - others:AV ČR(CZ) CAS-17-02
Program: Bilaterální spolupráce
Institutional support: RVO:68378271
Keywords : Ce,Mg:LuAG ceramics * Ce concentration * optical and scintillation properties
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 4.029, year: 2018

Ce,Mg:LuAG scintillation ceramics with Ce dopant content ranging from 0.025 at.% to 0.3 at.% and constant 0.2 at.% Mg codoping were fabricated by solid-state reaction. The effects of Ce concentration and annealing conditions on the microstructure, optical quality and scintillation properties are studied in great details. Lattice parameters as well as the absorption, photoluminescence, radioluminescence and thermoluminescence characteristics are investigated as a function of Ce content. Both the photoluminescence and scintillation decays are measured as well in order to study re-absorption and concentration quenching processes. In addition, an enhanced positive effect of air annealing on radioluminescence intensity and light yield is put in evidence. Moreover, the role of the charge transfer absorption of Ce4+ is investigated. Thermoluminescence measurements are performed to investigate the influence of both air annealing and Ce concentration on defects acting as traps.
Permanent Link: http://hdl.handle.net/11104/0285714