Luminescence and scintillation of Ce3+-doped oxide glass with high Gd2O3 concentration

✍ Scribed by Chewpraditkul, W. ;He, X. ;Chen, D. ;Shen, Y. ;Sheng, Q. ;Yu, B. ;Nikl, M. ;Kucerkova, R. ;Beitlerova, A. ;Wanarak, C. ;Phunpueok, A.

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 341 KB
• Volume: 208
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.201127365

✦ Synopsis

Abstract

Ce^3+^‐doped oxide glass with high Gd~2~O~3~ (30 mol%) concentration was prepared as a scintillating glass under CO reducing atmosphere. A dominant emission band of the Ce^3+^ 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 Bi~4~Ge~3~O~12~ 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 γ‐rays from a ^137^Cs source.