Luminescence and scintillation of Ce.sup.3+./sup.-doped oxide glass with high Gd.sub.2./sub.O.sub.3./sub. concentration

0370204 - FZÚ 2012 RIV DE eng J - Journal Article
Chewpraditkul, W. - He, X. - Chen, D. - Shen, Y. - Sheng, Q. - Yu, B. - Nikl, Martin - Kučerková, Romana - Beitlerová, Alena - Wanarak, C. - Phunpueok, A.
Luminescence and scintillation of Ce³⁺-doped oxide glass with high Gd₂O₃ concentration.
Physica Status Solidi A. Roč. 208, č. 12 (2011), s. 2830-2832. ISSN 1862-6300. E-ISSN 1862-6319
R&D Projects: GA MŠMT(CZ) ME10084
Institutional research plan: CEZ:AV0Z10100521
Keywords : Ce³⁺ * light yield * luminescence * oxide glasses * scintillation * time-resolved luminescence
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.463, year: 2011

Ce3+-doped oxide glass with high Gd2O3 (30 mol%) concentration was prepared as a scintillating glass under CO reducing atmosphere. A dominant emission band of the Ce3+ 5d - 4f transition peaking around 400 nm was observed in the photo- and radioluminescence (PL, RL) spectra. PL decay was governed by a few tens of nanoseconds decay time. The integral scintillation efficiency of about 30% of the Bi4Ge3O12 scintillator was observed as well. It exhibits a light yield of about 910 photons/MeV with an energy resolution of 18.3% (FWHM) in the pulse height spectrum of 662 keV gamma-rays from a 137Cs source.
Permanent Link: http://hdl.handle.net/11104/0204073