Improvement of γ-ray energy resolution of LaBr3:Ce3+ scintillation detectors by Sr2+ and Ca2+ co-doping

被引：135

作者：

Alekhin, M. S. ^{[1
]}

de Haas, J. T. M. ^{[1
]}

Khodyuk, I. V. ^{[1
]}

Kramer, K. W. ^{[2
]}

Menge, P. R. ^{[3
]}

Ouspenski, V. ^{[4
]}

Dorenbos, P. ^{[1
]}

机构：

[1] Delft Univ Technol, Fac Sci Appl, Dept Radiat Sci & Technol, NL-2629 JB Delft, Netherlands

[2] Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland

[3] St Gobain Crystals, Hiram, OH 44234 USA

[4] St Gobain Res, F-93303 Aubervilliers, France

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 16期

关键词：

PROPORTIONALITY; CE3+; PERFORMANCE;

D O I：

10.1063/1.4803440

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Commercially available LaBr3:5% Ce3+ scintillators show with photomultiplier tube readout about 2.7% energy resolution for the detection of 662 keV gamma-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. (C) 2013 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4803440]

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