Novel all-solid-state composite scintillators based on the epitaxial structures of LuAG garnet doped with Pr, Sc, and Ce ions

0493055 - FZÚ 2019 RIV US eng J - Journal Article
Witkiewicz-Lukaszek, S. - Gorbenko, V. - Zorenko, T. - Paprocki, K. - Sidletskiy, O. - Gerasymov, I. - Mareš, Jiří A. - Kučerková, Romana - Nikl, Martin - Zorenko, Yu.
Novel all-solid-state composite scintillators based on the epitaxial structures of LuAG garnet doped with Pr, Sc, and Ce ions.
IEEE Transactions on Nuclear Science. Roč. 65, č. 8 (2018), s. 2114-2119. ISSN 0018-9499. E-ISSN 1558-1578
R&D Projects: GA ČR GA16-15569S
Institutional support: RVO:68378271
Keywords : alpha-particles and gamma-quanta * Ce³⁺, Pr³⁺, and Sc³⁺ dopants * composite scintillator (CS) * films and crystals * liquid phase epitaxy (LPE) * LuAG
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.428, year: 2018

This paper presents our achievement in the development of new types of advanced composite scintillators (CSs) based on the single crystalline films (SCFs) of Lu3Al5O12 (LuAG) garnet, doped with Pr3+ and Sc3+ ions, and substrate from single crystals (SCs) of Ce3+-doped LuAG using the technology of liquid phase epitaxy. We show the possibility of the simultaneous registration of alpha-particles and gamma-quanta by means of separation of the decay kinetics of SCF and crystal parts of such CSs. Namely, the significant differences in the scintillation decay kinetics of LuAG:Pr SCF/LuAG:Ce SC and LuAG:Sc SCF/LuAG:Ce SC CSs under excitation by alpha-particles of Am-241 (5.5 MeV) source and gamma-quanta of Cs-137 (662 keV) source are observed. Thus, such types of CSs can be successfully applied for separation of the signals coming from their film and crystal parts at the registration of the mixed radiation fluxes of alpha-particles and gamma-quanta.
Permanent Link: http://hdl.handle.net/11104/0286515