Eu2+-doped Ba2Csl5, a new high-performance scintillator

被引：105

作者：

Bourret-Courchesne, E. D. ^{[1
]}

Bizarri, G. ^{[2
]}

Borade, R. ^{[2
]}

Yan, Z. ^{[1
]}

Hanrahan, S. M. ^{[2
]}

Gundiah, G. ^{[2
]}

Chaudhry, A. ^{[2
,3
]}

Canning, A. ^{[4
]}

Derenzo, S. E. ^{[2
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA

[3] Univ Calif Davis, Dept Elect & Comp Engn, Davis, CA 95616 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, Berkeley, CA 94720 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2009年 / 612卷 / 01期

关键词：

Scintillator; Halides; Europium; Energy resolution; Luminescence; Gamma-ray detection;

D O I：

10.1016/j.nima.2009.10.146

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The crystal growth and scintillation properties of Ba(2)Csl(5):Eu2+ are reported. Crystals were produced by the vertical Bridgman technique in a sealed quartz ampoule. Ba(2)Csl(5):Eu2+ presents excellent scintillation properties. An estimated light yield of 97,000 +/- 5,000 photons per MeV (ph/MeV) of absorbed gamma-ray energy was measured. An energy resolution (FWHM over peak position) of 3.8 +/- 0.3% was observed for the 662 keV full absorption peak. Pulsed X-ray luminescence measurements show a relatively complex time response with four exponential decay components of 48,383, 1500 and 9900 ns with a contribution to the total light output of 1%, 26%, 68% and 25%, respectively. Under X-ray and UV excitation, the emission corresponds to a broadband centered at 2.85 eV. First principles calculations show strong localization of the excited state on the Eu site. Ba(2)Csl(5):Eu2+ has a density of about 5 g/cm(3). These first reported scintillation properties make Ba(2)Csl(5):Eu2+ a very high-performance scintillator. Published by Elsevier B.V.

引用

页码：138 / 142

页数：5

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