LaBr3:Ce scintillators for gamma-ray spectroscopy

被引：171

作者：

Shah, KS ^{[1
]}

Glodo, J

Klugerman, M

Moses, WW

Derenzo, SE

Weber, AJ

机构：

[1] Radiat Monitoring Dept, Watertown, MA 02472 USA

[2] Lawrence Berkeley Lab, Berkeley, CA 94720 USA

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2003年 / 50卷 / 06期

关键词：

Ce3+; gamma-detection; bromide compounds; energy resolution; rare-earth trihalides; scintillation crystals;

D O I：

10.1109/TNS.2003.820614

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：

In this paper, we report on a relatively new scintillator - LaBr3:Ce for gamma-ray spectroscopy. -Crystals of this scintillator have. been grown using Bridgman process. This material when doped with cerium has high light output (similar to 60000 photons/MeV) and fast principal decay constant (less than or equal to 25 ns). Furthermore, it shows excellent energy resolution for gamma-ray detection. Energy resolution of 3.2% (FWHM) has been achieved for 662 keV photons (Cs-137 source) at room temperature. High timing resolution (260 ps - FWHM) has been recorded with LaBr3:Ce-PMT and BaF2-PMT detectors operating in coincidence mode using 511-keV positron annihilation gamma-ray pairs. Details of its scintillation properties, and variation of these properties with changing cerium concentration are reported. Potential applications of this material are also addressed.

引用

页码：2410 / 2413

页数：4

共 8 条

[1]

[Anonymous], 1986, Crystal Growth Processes

[2] MEASUREMENT OF TIME DEPENDENCE OF SCINTILLATION INTENSITY BY A DELAYED-COINCIDENCE METHOD [J].