Title :
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
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;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2009.2026475
