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Compositional engineering of multicomponent garnet scintillators: towards an ultra-accelerated scintillation response
/ Martinazzoli, Loris (CERN ; Milan Bicocca U. ; INFN, Milan Bicocca) ; Nargelas, Saulius (Vilnius, Inst. Theor. Phys. Astron.) ; Boháček, Pavel (Prague, Inst. Phys.) ; Calá, Roberto (CERN ; Milan Bicocca U. ; INFN, Milan Bicocca) ; Dušek, Michal (Prague, Inst. Phys.) ; Rohlíček, Jan (Prague, Inst. Phys.) ; Tamulaitis, Gintautas (Vilnius, Inst. Theor. Phys. Astron.) ; Auffray, Etiennette (CERN) ; Nikl, Martin (Prague, Inst. Phys.)
Optical, luminescence and scintillation characteristics were studied in garnet-type GAGG single-crystal scintillators grown by the Czochralski method and heavily doped with a cerium activator and a magnesium codopant at different concentrations. Emission quenching due to the formation of closely spaced Ce–Mg pairs accelerating the photoluminescence and scintillation decays down to a few nanoseconds and substantial suppression of slower decay components are observed. [...]
2022 - 11 p.
- Published in : Materials Advances 3 (2022) 6842-6852
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First investigation of the morphological and luminescence properties of HfO$_2$ nanoparticles synthesized by photochemical synthesis
/ Villa, Irene (Prague, Inst. Phys.) ; Procházková, Lenka Prouzová (Prague, Inst. Phys. ; Prague, Tech. U.) ; Mihóková, Eva (Prague, Inst. Phys.) ; Babin, Vladimir (Prague, Inst. Phys.) ; Král, Robert (Prague, Inst. Phys.) ; Zemenová, Petra (Prague, Inst. Phys.) ; Falvey, Alexandra (Prague, Inst. Phys.) ; Čuba, Václav (Prague, Tech. U.) ; Salomoni, Matteo (CERN ; Milan Bicocca U.) ; Pagano, Fiammetta (CERN ; Milan Bicocca U.) et al.
For the first time, hafnia (HfO$_2$) nanoparticles have been produced by photochemical synthesis. The photochemical route has been proven to be scalable, affordable, and straightforward to create monoclinic HfO$_2$ nanoparticles with a size of tens of nanometers. [...]
2023 - 10 p.
- Published in : CrystEngComm 25 (2023) 4345-4354
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Subpicosecond luminescence rise time in magnesium codoped GAGG:Ce scintillator
/ Tamulaitis, G (Vilnius U.) ; Vaitkevičius, A (Vilnius U.) ; Nargelas, S (Vilnius U.) ; Augulis, R (FTMC, Vilnius) ; Gulbinas, V (FTMC, Vilnius) ; Bohacek, P (Prague, Inst. Phys.) ; Nikl, M (Prague, Inst. Phys.) ; Borisevich, A (Minsk, Inst. Nucl. Problems) ; Fedorov, A (Minsk, Inst. Nucl. Problems) ; Korjik, M (Minsk, Inst. Nucl. Problems) et al.
The influence of co-doping of Gd$_{3}$Al$_{2}$GA$_{3}$O$_{12}$:Ce (GAGG:Ce) scintillator with magnesium on the rise time of luminescence response was studied in two GAGG:Ce crystals grown in nominally identical conditions except of Mg co-doping in one of them. Time-resolved photoluminescence spectroscopy and free carrier absorption techniques were exploited. [...]
10.1016/j.nima.2017.07.015.-
2017 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 870 (2017) 25-29
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Scintillation Characteristics of the Single-Crystalline Film and Composite Film-Crystal Scintillators Based on the Ce$^3$+-Doped (Lu,Gd)$_3$(Ga,Al)$_5$O$_{12}$ Mixed Garnets under Alpha and Beta Particles, and Gamma Ray Excitations
/ Mares, Jiri A (Prague, Inst. Phys.) ; Gorbenko, Vitalii (Kazimierz Wielki U., Bydgoszcz) ; Kucerkova, Romana (Prague, Inst. Phys.) ; Prusa, Petr (Prague, Tech. U.) ; Beitlerova, Alena (Prague, Inst. Phys.) ; Zorenko, Tetiana (Kazimierz Wielki U., Bydgoszcz) ; Pokorny, Martin (COMPAS, Turnov) ; Witkiewicz-Łukaszek, Sandra (Kazimierz Wielki U., Bydgoszcz) ; Syrotych, Yurii (Kazimierz Wielki U., Bydgoszcz) ; D'Ambrosio, Carmelo (CERN) et al.
The crystals of (Lu,Gd)3(Ga,Al)5O12 multicomponent garnets with high density ρ and effective atomic number Zeff are characterized by high scintillation efficiency and a light yield value up to 50,000 ph/MeV. During recent years, single-crystalline films and composite film/crystal scintillators were developed on the basis of these multicomponent garnets. [...]
2022 - 20 p.
- Published in : Materials 15 (2022) 7925
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Timing performance of lead halide perovskite nanoscintillators embedded in a polystyrene matrix
/ Děcká, Kateřina (Prague, Tech. U. ; Prague, Inst. Phys.) ; Pagano, Fiammetta (CERN ; Milan Bicocca U.) ; Frank, Isabel (CERN ; LMU Munich (main)) ; Kratochwil, Nicolaus (CERN) ; Mihóková, Eva (Prague, Tech. U. ; Prague, Inst. Phys.) ; Auffray, Etiennette (CERN) ; Čuba, Václav (Prague, Tech. U.)
Nanomaterials like CsPbBr$_3$, benefiting from quantum confinement effects to feature ultra-fast decay time and tunable emission, are paving the way for the next generation of fast timing detectors. However, an ongoing challenge is to exploit their favorable properties in a full detector, given their size and instability. [...]
2022 - 8 p.
- Published in : J. Mater. Chem. 10 (2022) 12836-12843
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Preparation and luminescence properties of ZnO:Ga – polystyrene composite scintillator
/ Burešová, Hana (NUVIA, Czech Republic) ; Procházková, Lenka (Prague, Tech. U.) ; Turtos, Rosana Martinez (Milan Bicocca U.) ; Jarý, Vítězslav (Prague, Inst. Phys.) ; Mihóková, Eva (Prague, Inst. Phys.) ; Beitlerová, Alena (Prague, Inst. Phys.) ; Pjatkan, Radek (NUVIA, Czech Republic) ; Gundacker, Stefan (CERN) ; Auffray, Etiennette (CERN) ; Lecoq, Paul (CERN) et al.
Highly luminescent ZnO:Ga-polystyrene composite (ZnO:Ga-PS) with ultrafast subnanosecond decay was prepared by homogeneous embedding the ZnO:Ga scintillating powder into the scintillating organic matrix. The powder was prepared by photo-induced precipitation with subsequent calcination in air and Ar/H2 atmospheres. [...]
2016 - 10 p.
- Published in : Opt. Express 24 (2016) 15289
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Scintillation Properties of ${\rm Ce}^{3+}$- and ${\rm Pr}^{3+}$-Doped LuAG, YAG and Mixed ${\rm Lu}_{\rm x}{\rm Y}_{1-{\rm x}}{\rm AG}$ Garnet Crystals
/ Mares, J A (Prague, Inst. Phys.) ; Nikl, M (Prague, Inst. Phys.) ; Beitlerova, A (Prague, Inst. Phys.) ; Horodysky, P (Crytur Ltd., Turnov, Czech Republik) ; Blazek, K (Crytur Ltd., Turnov, Czech Republik) ; Bartos, K (Crytur Ltd., Turnov, Czech Republik) ; D'Ambrosio, C (CERN)
We summarize the latest R&D; state-of-art of Ce 3+ and Pr 3+ -doped mixed (Lu x Y 1-x ) 3 Al 5 O 12 (LuYAG) garnet scintillator crystals and compare their properties with those of Lu 3 Al 5 O 12 (LuAG) and Y 3 Al 5 O 12 (YAG) single crystal analogues. Light yield, energy resolution and proportionality were studied under radioisotope excitation within 8-1300 keV energy range. [...]
2012 - 6 p.
- Published in : IEEE Trans. Nucl. Sci. 59 (2012) 2120-2125
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PEA$_2$PbI$_4$: fast two-dimensional lead iodide perovskite scintillator with green and red emission
/ Kowal, D (Warsaw, Inst. Phys.) ; Makowski, M (Torun, Copernicus Astron. Ctr.) ; Witkowski, M E (Torun, Copernicus Astron. Ctr.) ; Cala', R (CERN ; Milan Bicocca U.) ; Sheikh, M A Kuddus (Warsaw, Inst. Phys.) ; Mahyuddin, M H (Bandung Inst. Tech.) ; Auffray, E (CERN) ; Drozdowski, W (Torun, Copernicus Astron. Ctr.) ; Cortecchia, D (U. Rome La Sapienza (main) ; U. Bologna, DIFA) ; Birowosuto, M D (Warsaw, Inst. Phys.)
Among the two-dimensional hybrid organic-inorganic perovskites, PEA$_2$PbI$_4$ is one of the best scintillators combining high light yield and fast nanosecond decay time. However, it has limited sensitivity to
X-ray and positron emission tomography because of insufficient mass density and effective atomic
number. [...]
2023 - 7 p.
- Published in : Materials Today Chemistry 29 (2023) 101455
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