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

页码：132 / 135

页数：4

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