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1.
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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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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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Core–shell ZnO:Ga-SiO$_2$ nanocrystals: limiting particle agglomeration and increasing luminescence via surface defect passivation
/ Procházková, Lenka (Prague, Tech. U. ; Prague, Inst. Phys.) ; Vaněček, Vojtěch (CTU, Prague) ; Čuba, Václav (CTU, Prague) ; Pjatkan, Radek (Unlisted, CZ) ; Martinez-Turtos, Rosana (Milan Bicocca U.) ; Jakubec, Ivo (ASCR, Prague) ; Buryi, Maksym (Prague, Inst. Phys.) ; Omelkov, Sergey (Tartu U.) ; Auffray, Etiennette (CERN) ; Lecoq, Paul (CERN) et al.
Heat treatment is needed to increase the luminescence intensity of ZnO:Ga particles, but it comes at the cost of higher particle agglomeration. Higher agglomeration results in low transparency of scintillating powder when embedded in a matrix and constitutes one of the biggest disadvantages, besides low light yield and low stopping power, of ZnO:Ga powder. [...]
2019 - 7 p.
- Published in : RCS Advances 9 (2019) 28946-28952
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4.
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CsPbBr3 Thin Films on LYSO:Ce Substrates
/ Tomanová, Kateřina (CTU, Prague) ; Suchá, Adéla (CTU, Prague) ; Mihóková, Eva (CTU, Prague) ; Procházková, Lenka (CTU, Prague) ; Jakubec, Ivo (ASCR, Prague) ; Turtos, Rosana M (CERN) ; Gundacker, Stefan (CERN) ; Auffray, Etiennette (CERN) ; Čuba, Václav (CTU, Prague)
We fabricate thin films of lead halide perovskite nanocrystals on glass substrates and cerium-doped LYSO substrates (lutetium-yttrium oxyorthosilicate, LuxY2-xSiO5:Ce) using spin-coating and drop-casting methods, respectively. We study their structural and optical properties. [...]
2020 - 6 p.
- Published in : IEEE Trans. Nucl. Sci. 67 (2020) 933-938
In : 15th International Conference on Inorganic Scintillators and Their Applications, Sendai, Japan, 29 Sep - 04 Oct 2019, pp.933-938
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5.
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On the structure, synthesis, and characterization of ultrafast blue-emitting CsPbBr$_3$ nanoplatelets
/ Tomanová, Kateřina (Prague, Tech. U.) ; Čuba, Václav (Prague, Tech. U.) ; Brik, Mikhail G (Tartu U. ; Inst. Phys., Czestochowa ; Prague, Inst. Phys.) ; Mihóková, Eva (Prague, Inst. Phys.) ; Turtos, Rosana Martinez (CERN) ; Lecoq, Paul (CERN) ; Auffray, Etiennette (CERN) ; Nikl, Martin (Prague, Inst. Phys.)
Recent developments in medical imaging techniques, in particular, those in time-of-flight positron emission tomography put new challenges on scintillating material performance that cannot be fulfilled by conventional scintillators. Bright and ultrafast nanoparticles represent promising candidates to build up an advanced detection system needed. [...]
2019
- Published in : APL Materials 7 (2019) 011104
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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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7.
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Slow components in the photoluminescence and scintillation decays of PbWO4 single crystals
/ Nikl, M (CERN) ; Nitsch, K ; Polák, K ; Mihoková, E ; Dafinei, I ; Auffray, E ; Lecoq, P ; Reiche P ; Uecker, R ; Pazzi, G P
1996
- Published in : Phys. Status Solidi, B 195 (1996) 311-323
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8.
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Luminescence and scintillation properties of YAG:Ce single crystal and optical ceramics
/ Mihóková, E (Institute of Physics, ASCR, Prague, Czech Republic) ; Nikl, M (Institute of Physics, ASCR, Prague, Czech Republic) ; Mareš, J A (Institute of Physics, ASCR, Prague, Czech Republic) ; Beitlerová, A (Institute of Physics, ASCR, Prague, Czech Republic) ; Vedda, A (CNR-INFM and Dipartimento di Scienza dei Materiali, Univ. di Milano- Bicocca, Milano, Italy) ; Nejezchleb, K (Crytur Ltd., Turnov, Czech Republic) ; Blažek, K (Crytur Ltd., Turnov, Czech Republic) ; D’Ambrosio, C (CERN)
We use various techniques to study optical and scintillation properties of Ce-doped yttrium aluminum garnet, Y3Al5O12 (YAG:Ce), in the form of a high-quality industrial single crystal. This was compared to optical ceramics prepared from YAG:Ce nanopowders. [...]
2007
- Published in : J. Lumin. 126 (2007) 77-80
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10.
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Activity of LUMEN (1996-97) : Understanding of PbWO4 Scintillator Characteristics and their Optimisation
/ Baccaro, Stefania (ENEA, INN-TEC, Casaccia, Roma, Italy) ; Bohácek, P (Institute of Physics, Academy of Science, Prague, Czech Republic) ; Borgia, Bruno (Dipartimento di Fisica, Universita La Sapienza, Roma, Italy) ; Cecilia, Angelica (ENEA, INN-TEC, Casaccia, Roma, Italy) ; Croci, S (INFM, Dipartimento Scienza dei Materiali, Univ. di Milano) ; Dafinei, Ioan (Dipartimento di Fisica, Universita La Sapienza, Roma, Italy) ; Diemoz, Marcella (Dipartimento di Fisica, Universita La Sapienza, Roma, Italy) ; Fabeni, P (IROE-CNR, Firenze, Italy) ; Festinesi, Armando (ENEA, INN-TEC, Casaccia, Roma, Italy) ; Jarolímek, O (CRYTUR, Turnov, Czech Republic) et al.
The aim of the LUMEN co-operation, supported by INFN, is to obtain ful experimental characterisation and deep expertise of heavy scintillator for high energy physics. The advantage of this collaboration was mainly in the complementary character of the experimental techniques available in the partner laboratories and in the availability of highly experienced scientists indifferent fields. [...]
CMS-NOTE-1998-067.-
Geneva : CERN, 1998
Fulltext: PDF PS.Z;
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