Crystal Growth and Scintillation Properties of Ho-Doped Lu3Al5O12 Single Crystals

被引：3

作者：

Sugiyama, Makoto ^{[1
]}

Yanagida, Takayuki ^{[2
]}

Fujimoto, Yutaka ^{[1
]}

Totsuka, Daisuke ^{[1
,3
]}

Yokota, Yuui ^{[1
]}

Kurosawa, Shunsuke ^{[1
]}

Futami, Yoshisuke ^{[1
]}

Yoshikawa, Akira ^{[1
,2
]}

机构：

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

[2] Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 9808579, Japan

[3] Nihon Kessho Kogaku CO Ltd, Gunma 3740047, Japan

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2012年 / 59卷 / 05期

关键词：

Crystalline materials; gamma ray detectors; Ho3+ doping; LuAG crystal; materials testing; radiation detectors; EMISSION; LUAG; LUMINESCENCE; DETECTORS; CE;

D O I：

10.1109/TNS.2012.2189130

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The crystals of 0.1, 0.5, 1, and 3% Ho doped Lu3Al5O12 (Ho:LuAG) grown by the micro-pulling-down method were examined for their scintillation properties. At wavelengths longer than 300 nm, Ho: LuAG crystals demonstrated around 60% transparency with many absorption peaks attributed to Ho3+ 4f(10)-4f(10) transitions. When excited by Am-241 alpha-ray to obtain radio luminescence spectra, broad host emission and four sharp Ho3+ 4f(10)-4f(10) emission peaks were detected in the visible region. Light yields and decay time profiles of the samples irradiated by Cs-137 gamma-ray were measured using photomultiplier tubes R7600 (Hamamatsu). Ho 0.5%:LuAG showed the highest light yield of 3100 +/- 310 photons/MeV among the present samples. The decay time profiles were well reproduced by two components exponential approximation consisting of 0.5-1 mu s and 3-6 mu s.

引用

页码：2141 / 2145

页数：5

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