Scintillation Properties of Transparent Ceramic Pr:LuAG for Different Pr Concentration

Author

Yanagida, Takayuki ; Fujimoto, Yutaka ; Kamada, Kei ; Totsuka, Daisuke ; Yagi, Hideki ; Yanagitani, Takagimi ; Futami, Yoshisuke ; Yanagida, Satoko ; Kurosawa, Shunsuke ; Yokota, Yuui ; Yoshikawa, Akira ; Nikl, Martin

Author_Institution

New Ind. Creation Hatchery Center (NICHe), Tohoku Univ., Sendai, Japan

Volume

59

Issue

5

fYear

2012

Firstpage

2146

Lastpage

2151

Abstract

We manufactured transparent optical ceramic of Pr 0.2-1% doped Lu₃Al₅ O₁₂ (Pr:LuAG) by the sintering method. We compare its optical and scintillation properties with the single crystal counterpart grown by the conventional Czochralski method. So far the scintillation ceramic of Pr:LuAG appeared inferior to its single crystal analog especially in terms of light yield. However, in the present case our ceramic Pr 0.25%-doped sample exhibited by 20% higher light yield compared to single crystal under γ-ray excitation. Furthermore, in the ceramic sample the slower scintillation decay components were suppressed and the defect related host emission as well. The optimized technology of optical ceramics thus appears very competitive to single crystals and opens great practical prospectives for the former materials in the field of fast scintillators.

Keywords

ceramics; crystal growth from melt; praseodymium compounds; scintillation; sintering; Czochralski method; Pr concentration; Pr:Lu₃Al₅O₁₂; ceramic sample; gamma-ray excitation; optical properties; scintillation properties; sintering method; transparent ceramic Pr:LuAG; transparent optical ceramic; Ceramics; Crystals; Energy resolution; Luminescence; Optical device fabrication; Optical variables measurement; Gamma ray detection; scintillation counters; solid scintillation detectors;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2012.2189583

Filename

6190751