Eu and Rb co-doped LiCaAlF6 scintillators for neutron detection

被引：4
|
作者：
Yamaji, Akihiro [1 ]
Yanagida, Takayuki [2 ]
Kawaguchi, Noriaki [3 ]
Yokota, Yuui [1 ]
Fujimoto, Yutaka [1 ]
Kurosawa, Shunsuke [1 ]
Pejchal, Jan [1 ]
Watanabe, Kenichi [4 ]
Yamazaki, Atsushi [4 ]
Yoshikawa, Akira [1 ,2 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 980, Japan
[2] Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 980, Japan
[3] Tokuyama Corp, Shibuya, Japan
[4] Nagoya Univ, Dept Mat Phys & Energy Engn, Nagoya, Aichi 4648601, Japan
来源：
RADIATION MEASUREMENTS | 2013年 / 55卷
关键词：
LiCaAlF6; Single crystal; Co-doping; Thermal neutron; Scintillator;
D O I：
10.1016/j.radmeas.2013.04.021
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Eu and Rb co-doped LiCaAlF6 (LiCAF) single crystals with different dopant concentrations were grown by the micro-pulling-down method for neutron detection. Their transmittance spectra showed strong absorption bands at 200-220 and 290-350 nm, and under Am-241 alpha-ray excitation, their radioluminescence spectra exhibited an intense emission peak at 373 nm that was attributed to the Eu2+ 5d-4f transition. These results were consistent with those for the Rb-free Eu:LiCAF. The highest light yield among the grown crystals was 36,000 ph/n, which was 20% greater than that of the Rb-free crystal. In addition, the neutron-excited scintillation decay times were 650-750 ns slower than that of the Rb-free Eu:LiCAF. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：132 / 135
页数：4
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