Photo- and radio-excited luminescence properties of Eu-doped La2O3-Al2O3 based eutectics

被引：6

作者：

Fujimoto, Yutaka ^{[1
,3
]}

Kamada, Kei ^{[1
,3
]}

Yanagida, Takayuki ^{[2
,3
]}

Wakahara, Shingo ^{[1
,3
]}

Suzuki, Shotaro ^{[1
,3
]}

Kurosawa, Shunsuke ^{[1
,3
]}

Yoshikawa, Akira ^{[1
,3
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Kyushu Inst Technol, Wakamatsu Ku, Kitakyushu, Fukuoka 8080196, Japan

[3] Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

RADIATION MEASUREMENTS | 2013年 / 56卷

关键词：

Eutectic crystal; Scintillator; Eu2+ 5d-4f transition; Micro-pulling down (mu-PD) technique; SCINTILLATORS;

D O I：

10.1016/j.radmeas.2013.03.028

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：

Eutectic crystal of 0.5% Eu-doped 30LaAlO(3)-70Al(2)O(3) (vol %) was prepared by micro-pulling down (mu-PD) technique under nitrogen atmosphere. Being excited at a wavelength of 320 nm, the crystal exhibited intense emission band with a maximum at 450 nm which is corresponding to 4f(6)5d-4f(7)(S-8(7/2)) transitions of Eu2+. The decay time and fluorescence quantum efficiency (QE) were determined to be about 475 ns and 60%, respectively. When alpha-ray excited the crystal, both Eu2+ 4f(6)5d-4f(7)(S-8(7/2)) and Eu3+ 4f(6)-4f(6)(D-5(0)-E-7(1,2)) emission peaks were observed at 435 nm and 600 nm. By the pulse height spectra, the relative scintillation light yield of the crystal was about 4% compared with that of BGO commercial scintillator. (C) 2013 Published by Elsevier Ltd.

引用

页码：107 / 110

页数：4

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