Ce:YAG transparent ceramics based on nanopowders produced by laser ablation method: Fabrication, optical and scintillation properties
https://doi.org/10.17586/2220-8054-2017-8-3-351-359
Abstract
Transparent Ce:YAG ceramics were fabricated by the solid-state reaction method with an additional round of pre-calcining using nanopowders of Ce2xY2−2xO3 (x = 0.001, 0.01, 0.03 and 0.05) and Al2O3 synthesized by laser ablation. Additional pre-calcining of the nanopowder mixture in air was used to partially transform the oxides into the YAG phase before sintering. The transmittance of the obtained 2-mm-thick Ce:YAG ceramics was over 81 % in the wavelength range of 500–900 nm. The average volumes of the scattering centers in the obtained ceramics were evaluated by direct count method to be 34, 74, 53, 50 ppm for 0.1, 1, 3 and 5 % Ce doping concentration, respectively. The absolute light yields, energy resolutions under 662 keV gamma ray, and decay curves of scintillations of the fabricated Ce:YAG samples were measured and compared to those of Ce:YAG and CsI:Tl single crystals.
Keywords
Laser ablation,
nanopowder,
yttrium aluminium garnet,
cerium,
scintillator,
transparent ceramics,
transmittance
Supporting agencies: The work was fulfilled in the frame of state task project No. 0389-2014-0027 (2016–2017) and supported by Act 211 Government of the Russian Federation, contract No. 02.A03.21.0006.
About the Authors
V. V. Osipov
Institute of Electrophysics UrB RAS
Russian Federation
Russian Federation
Amundsena St. 106, Ekaterinburg 620016
V. A. Shitov
Institute of Electrophysics UrB RAS
Russian Federation
Russian Federation
Amundsena St. 106, Ekaterinburg 620016
K. E. Lukyashin
Institute of Electrophysics UrB RAS
Russian Federation
Russian Federation
Amundsena St. 106, Ekaterinburg 620016
R. N. Maksimov
Institute of Electrophysics UrB RAS; Ural Federal University
Russian Federation
Russian Federation
Amundsena St. 106, Ekaterinburg 620016; Mira St. 19, Ekaterinburg 620002
A. V. Ishchenko
Ural Federal University
Russian Federation
Russian Federation
Mira St. 19, Ekaterinburg 620002
V. V. Platonov
Institute of Electrophysics UrB RAS
Russian Federation
Russian Federation
Amundsena St. 106, Ekaterinburg 620016
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Review
For citations:
Osipov V.V., Shitov V.A., Lukyashin K.E., Maksimov R.N., Ishchenko A.V., Platonov V.V. Ce:YAG transparent ceramics based on nanopowders produced by laser ablation method: Fabrication, optical and scintillation properties. Nanosystems: Physics, Chemistry, Mathematics. 2017;8(3):351-359. https://doi.org/10.17586/2220-8054-2017-8-3-351-359
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