Liquid phase epitaxy growth of high-performance composite scintillators based on single crystalline films and crystals of LuAG

0532553 - FZÚ 2021 RIV GB eng J - Journal Article
Witkiewicz-Lukaszek, S. - Gorbenko, V. - Zorenko, T. - Sidletskiy, O. - Arhipov, P. - Fedorov, A. - Mareš, Jiří A. - Kučerková, Romana - Nikl, Martin - Zorenko, Y.
Liquid phase epitaxy growth of high-performance composite scintillators based on single crystalline films and crystals of LuAG.
CrystEngComm. Roč. 22, č. 21 (2020), s. 3713-3724. ISSN 1466-8033
R&D Projects: GA ČR GA16-15569S
Institutional support: RVO:68378271
Keywords : Lu₃Al₅O₁₂ garnet * scintillation decay kinetics * decay time * luminiscence
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.545, year: 2020
Method of publishing: Limited access
https://doi.org/10.1039/d0ce00266f

This work is devoted to the development of two novel types of advanced composite scintillators based on single crystalline films (SCFs) of Lu3Al5O12 garnet (LuAG), doped with Ce3+ and Pr3+ ions, and substrates from single crystals (SCs) of Sc3+ doped LuAG using the liquid phase epitaxy (LPE) method. We show the possibility for simultaneous registration of α-particles and γ-quanta using separation of the decay kinetics of the SCF and crystal parts of such composite scintillators. Namely, large differences in the respective scintillation decay kinetics and decay time values tα and tγ are observed for LuAG:Ce SCF/LuAG:Sc SC and LuAG:Pr SCF/LuAG:Sc SC composite scintillators under excitation by α-particles from an 241Am (5.5 MeV) source and γ-quanta from a 137Cs (662 keV) source. Thus, both developed types of composite scintillators can be applied for simultaneous registration of α-particles and γ-quanta in mixed radiation fluxes.
Permanent Link: http://hdl.handle.net/11104/0311012