Luminescence and Scintillation Characterization of Cs2NaGdBr6: Ce3+ Single Crystal

被引：18
作者：
Rooh, Gul [2 ]
Kim, H. J. [1 ]
Park, H. [1 ]
Kim, Sunghwan [3 ]
机构：
[1] Kyungpook Natl Univ, Dept Phys, Taegu 702701, South Korea
[2] Abdul Wali Khan Univ, Dept Phys, Mardan 23200, Pakistan
[3] Cheongju Univ, Dept Radiol Sci, Chonju 360764, South Korea
来源：
JOURNAL OF LUMINESCENCE | 2012年 / 132卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
X-ray; Scintillation; Light Yield; Energy Resolution; Crystal; PURE; LIMITATIONS; ELPASOLITES; EMISSION; GROWTH;
D O I：
10.1016/j.jlumin.2011.10.015
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Luminescence and scintillation properties of newly discovered bromo-elpasolites Cs2NaGdBr6: Ce3+ (CNGB: Ce3+) are presented. Single crystals of CNGB: Ce3+ with dimensions up to 07 x 10 mm(3) are successfully grown by the Bridgman technique. X-ray excited luminescence measurements of the grown samples showed a broad emission band in the wavelength range from 365 to 470 nm. It offered an energy resolution of 5.1% (FWHM) at 662 key for 10% Ce sample. The light output of the investigated samples increases along with cerium concentration. A maximum light yield of similar to 36,800 ph/MeV is measured for the 10% Ce sample crystal. Under gamma-ray excitation, CNGB: Ce3+ crystals showed three exponential decay time components. The scintillation mechanism in the sample crystal is presented. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：713 / 716
页数：4
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