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Photoluminescence and Scintillation Properties of Ce-, Pr-, and Tb-doped (Gd,Lu)2Hf2O7 Crystals
被引:26
作者:
Nakauchi, Daisuke
[1
]
Fukushima, Hiroyuki
[1
]
Kato, Takumi
[1
]
Kawaguchi, Noriaki
[1
]
Yanagida, Takayuki
[1
]
机构:
[1] Nara Inst Sci & Technol NAIST, Div Mat Sci, 8916-5 Takayama, Ikoma, Nara 6300192, Japan
基金:
日本科学技术振兴机构;
关键词:
scintillator;
photoluminescence;
radioluminescence;
phosphor;
dosimetry;
STIMULATED LUMINESCENCE PROPERTIES;
X-RAY;
DOSIMETRIC PROPERTIES;
OXYGEN VACANCIES;
RADIOLUMINESCENCE;
D O I:
10.18494/SAM3696
中图分类号:
TH7 [仪器、仪表];
学科分类号:
0804 ;
080401 ;
081102 ;
摘要:
Gd2Hf2O7 and Lu2Hf2O7 single crystals doped with various rare-earth ions (Ce3+, Pr3+, and Tb3+) were prepared by the floating zone method to investigate their photoluminescence and scintillation properties. The Ce-doped samples show scintillation signals with a broad peak in the range of 400-600 nm, whereas the Tb-and Pr-doped samples show relatively strong emission characterized by a few sharp peaks in the range of 480-700 nm due to 4f-4f transitions of the dopant ions. The scintillation spectra of the Ce-doped Lu2Hf2O7 after annealing at various temperatures show significant changes in their shapes, suggesting changes in the valence of the Ce ions.
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页码:611 / 618
页数:8
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