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

Mikhail S. Alekhin | Zendy; J.T.M. de Haas | Zendy; I. V. Khodyuk | Zendy; Karl W. Krämer | Zendy; P. Menge | Zendy; V. Ouspenski | Zendy; P. Dorenbos | Zendy

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

Author(s) -

Mikhail S. Alekhin,

J.T.M. de Haas,

I. V. Khodyuk,

Karl W. Krämer,

P. Menge,

V. Ouspenski,

P. Dorenbos

Publication year - 2013

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4803440

Subject(s) - scintillator , scintillation , photomultiplier , ionization , doping , resolution (logic) , electron , detector , ion , scintillation counter , physics , materials science , atomic physics , analytical chemistry (journal) , optics , chemistry , optoelectronics , nuclear physics , chromatography , quantum mechanics , artificial intelligence , computer science

Commercially available LaBr3:5% Ce3+ scintillators show with photomultiplier tube readout about 2.7% energy resolution for the detection of 662?keV ?-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

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