Scintillation Properties of and Self Absorption in SrI2:Eu2+

被引：73

作者：

Alekhin, Mikhail S. ^{[1
]}

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

Kraemer, Karl W. ^{[2
]}

Dorenbos, Pieter ^{[1
]}

机构：

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

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

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2011年 / 58卷 / 05期

关键词：

Gamma-ray spectroscopy; scintillators; self-absorption; SrI2; strontium iodide; LUMINESCENCE; RADIATION;

D O I：

10.1109/TNS.2011.2163642

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The scintillation properties of pure SrI2 and SrI2 doped with 0.5%, 0.86%, 2%, and 5% europium were studied. Different techniques were used to measure gamma-ray excited pulse-height and scintillation decay time spectra, and to perform X-ray excited and optically excited emission spectroscopy. Eu2+ emission and trapped exciton (TE) emission was observed in SrI2 : Eu2+ samples. These emissions were studied as a function of temperature, Eu concentration, and sample size. A spectral overlap was observed between Eu2+ excitation and emission spectra, the amount of overlap depends on temperature. The light yield, energy resolution and luminescence decay profiles reveal also a dependence on temperature, sample size, and Eu concentration. The observations were analyzed and interpreted in terms of two separate models. One model consists of the relation between TE and Eu2+ emission and the other deals with self absorption processes.

引用

页码：2519 / 2527

页数：9

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