Optical and Scintillation Properties of Eu-doped Calcium Orthoborate

被引：3

作者：

Fujimoto, Y. ^{[1
]}

Futami, Y. ^{[1
]}

Yanagida, T. ^{[1
]}

Kurosawa, S. ^{[1
]}

Kawaguch, N. ^{[3
]}

Fukuda, K. ^{[3
]}

Totsuka, D. ^{[4
]}

Yoshikawa, A. ^{[1
,2
]}

机构：

[1] Tohoku Univ, IMR, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, NICHE, Aoba Ku, Sendai, Miyagi 9808577, Japan

[3] Tokuyama Corp, Shibuya Ku, Tokyo 1508383, Japan

[4] NIHON KESSHO KOGAKU CO LTD, Gunma 3740047, Japan

来源：

MATERIALS INTEGRATION | 2012年 / 508卷

关键词：

scintillator; borate; luminescence; single crystal;

D O I：

10.4028/www.scientific.net/KEM.508.235

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Single crystals of Eu-doped calcium orthoborate have been grown by micro-pulling (mu-PD) technique with radio frequency heating system, and its transmittance, photoluminescence and radiation responses were investigated. In transmittance spectra, Eu-doped crystal showed broad absorption band around 200-450 nm, which is due to the complex of charge transfer (CT) transition and 4f-4f transition of Eu3+. Intense Eu2+ 5f-4f and Eu3+ 4f-4f emission peaks were observed when excited to 265 nm and 385 nm, and the calculated decay times were 230 ns and 1.5 ms, respectively. Am-241 5.5 MeV alpha-ray excited radioluminescence spectra indicated both Eu2+ 5f-4f and Eu3+ 4f-4f emission peaks.

引用

页码：235 / +

页数：2

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