Luminescence and scintillation characteristics of cerium doped Gd.sub.2./sub.YGa.sub.3./sub.Al.sub.2./sub.O.sub.12./sub. ceramics

0520200 - FZÚ 2020 RIV NL eng J - Článek v odborném periodiku
Chen, X. - Hu, Z. - Feng, Y. - Liu, X. - Chen, H. - Shi, Y. - Kučerková, Romana - Beitlerová, Alena - Nikl, Martin - Li, J.
Luminescence and scintillation characteristics of cerium doped Gd₂YGa₃Al₂O₁₂ ceramics.
Optical Materials. Roč. 90, Apr (2019), s. 20-25. ISSN 0925-3467. E-ISSN 1873-1252
Grant CEP: GA ČR GA16-15569S; GA MŠMT EF16_027/0008215
Grant ostatní: MOBILITY FZU(XE) CZ.02.2.69/0.0/0.0/16_027/0008215
Institucionální podpora: RVO:68378271
Klíčová slova: Ce:GYGAG ceramics * photoluminescence * decay kinetics * scintillation efficiency
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.779, rok: 2019
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.optmat.2019.02.008

The cerium doped Gd2YGa3Al2O12(Ce:GYGAG) scintillation ceramics were fabricated by the solid state reaction method. The microstructure, luminescence and scintillation properties have been studied. In photoluminescence decays, the decay times of Ce:GYGAG ceramic samples are close to monoexponential. Some slower component can be found, which can be related to the local inhomogeneities of ceramic sample and self-absorption of Ce3+. Meanwhile, the Ce:GYGAG ceramics perform excellent on scintillation efficiency which is evaluated by the XEL steady-state luminescence and its fast part characterized by light yield (LY). The LY value reaches ∼45000 ph/MeV with an energy resolution of 8.67% under the γ-ray excitation. The LY0.5μs/LY6μs value of Ce:GYGAG is calculated to be 87.5% which is much superior than 42.5% in compared Ce:LuAG ceramics. In the scintillation decays, a lower content of slow components are detected in Ce:GYGAG ceramic sample comparing to the Ce:LuAG ceramics.

Trvalý link: http://hdl.handle.net/11104/0304885