| 标题 |
 Improvement of g-ray energy resolution of LaBr3:Ce3+ scintillation d e t e c t o r s b y S r2+ and Ca2+ co-doping 相关领域
闪烁体
闪烁
光电倍增管
兴奋剂
电离
分辨率（逻辑）
离子
电子
探测器
闪烁计数器
物理
荧光粉
材料科学
原子物理学
分析化学（期刊）
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| 其它 |
ABSTRACT Commercially available LaBr3:5% Ce3+ scintillators show with photomultiplier tube readout about 2.7% energy resolution for the detection of 662 keV γ-rays. Here we will show that by co-doping LaBr3:Ce3+ with Sr2+ or Ca2+ the resolution is improved to 2.0%. Such an improvement is attributed to a strong reduction of the scintillation light losses that are due to radiationless recombination of free electrons and holes during the earliest stages (1–10 ps) inside the high free charge carrier density parts of the ionization track. This work was funded by the Dutch Technology Foundation (STW) and supported by Saint-Gobain Crystals, France and by the European Community's Seventh Framework Program (FP7/2007-2013) under Grant Agreement No. 226716. We sincerely thank Dr. A. Owens and Dr. F. Quarati for sharing their beamtime at the synchrotron with us and their assistance in some of the experiments. |
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