Growth of Y2O3, Sc2O3 and Lu2O3 crystals by the micro-pulling-down method and their optical and scintillation characteristics

被引：29
|
作者：
Fukabori, Akihiro [1 ]
Chani, Valery [1 ]
Kamada, Kei [1 ,2 ]
Yanagida, Takayuki [1 ]
Yokota, Yuui [1 ]
Moretti, Federico [3 ]
Kawaguchi, Noriaki [4 ]
Yoshikawa, Akira [1 ,5 ]
机构：
[1] Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9800812, Japan
[2] Furukawa Co Ltd, Tsukuba, Ibaraki 3050856, Japan
[3] Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy
[4] Tokuyama Corp, Aoba Ku, Sendai, Miyagi 9893204, Japan
[5] Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan
来源：
JOURNAL OF CRYSTAL GROWTH | 2011年 / 318卷 / 01期
关键词：
Radiation; Growth from melt; Single crystal growth; Oxides; Scintillator materials; HIGH-MELTING SESQUIOXIDES; LUMINESCENCE; OXIDES;
D O I：
10.1016/j.jcrysgro.2010.10.211
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The growth of Y2O3, Sc2O3, and Lu2O3 single crystals using the micro-pulling-down method is reported. Crystallinity, optical transmittance, and scintillation characteristics including emission spectra, pulse height spectra, and decay kinetics under a-ray excitation of the grown crystals were studied. The light yields of Y2O3, Sc2O3, and Lu2O3 crystals were estimated from the pulse height spectra excited by Am-241 5.5 MeV alpha-rays, in about 920 +/- 92 ph/5.5 MeV alpha, 370 +/- 37 ph/5.5 MeV alpha, and 150 +/- 15 ph/5.5 MeV alpha, respectively. The scintillation decay times of Y2O3, Sc2O3, and Lu2O3 crystals were estimated with following fast/slow parameters 30.1/184, 14.6/51.3, and 16.7 ns, respectively. Furthermore, a-ray imaging was performed using Y2O3 crystal. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：823 / 827
页数：5
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