Basic Properties of Ceramic Pr:LuAG Scintillators

Author

Yanagida, Takayuki ; Yoshikawa, Akira ; Ikesue, Akio ; Kamada, Kei ; Yokota, Yuui

Author_Institution

IMRAM, Tohoku Univ., Sendai, Japan

Volume

56

Issue

5

fYear

2009

Firstpage

2955

Lastpage

2959

Abstract

This paper describes the first report of a Pr³⁺-doped transparent ceramic Lu₃Al₅O₁₂ (Pr:LuAG) scintillator. Transparent ceramic Pr0.25 mol% doped LuAG was developed by a sintering method, and achieved 70% transparency at wavelengths longer than 310 nm. The emission wavelength of the ceramic Pr:LuAG shifts to longer wavelengths than that of its single crystalline counterpart. The light yield was measured by irradiation of ¹³⁷Cs, and was almost half as that of the single crystalline counterpart. The energy resolution at 662 keV was 12% which was about three times as worse as that of the single crystalline one. The decay time showed a big difference with the single crystalline one because its slower component disappeared due to defects.

Keywords

absorption coefficients; ceramics; doping profiles; gamma-ray effects; lutetium compounds; praseodymium; radiation effects; scintillation counters; sintering; transparency; Lu₃Al₅O₁₂:Pr³⁺; absorption coefficient; doped transparent ceramic scintillator; electron volt energy 662 keV; energy resolution; gamma-ray irradiation effects; scintillation detectors; sintering method; transparency; Automatic control; Biomedical imaging; Ceramics; Chemical industry; Control systems; Crystallization; Crystals; Energy resolution; Extraterrestrial measurements; Wavelength measurement; Crystals; nuclear power instrumentation; optical materials; scintillation detectors; scintillators;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2009.2026475

Filename

5280484