Crystal growth and scintillation properties of 2-inch-diameter Pr:Lu3Al5O12 (Pr:LuAG) single crystal

被引：58
作者：
Kamada, Kei [1 ]
Tsutsumi, Kousuke [1 ]
Usuki, Yoshiyuki [1 ]
Ogino, Hiraku [2 ]
Yanagida, Takayuki [3 ]
Yoshikawa, Akira [3 ]
机构：
[1] Furukawa Co Ltd, Mat Res Lab, Tsukuba, Ibaraki 3050856, Japan
[2] Univ Tokyo, Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan
[3] Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2008年 / 55卷 / 03期
关键词：
5d-4f luminescence; crystal growth; gamma-ray detectors; garnets; Pr3+;
D O I：
10.1109/TNS.2008.924072
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：
In this work we tried to grow 2-inch-diameter and high quality Pr:LuAG single crystals by the Czochralski (Cz) method. To grow the large diameter Pr:LuAG single crystal, we have optimized growth conditions and the furnace design. As a result, we have succeeded in the growth of 2-inch-diameter Pr:LuAG single crystal with a length of 110 mm. To determine light yield and energy resolution the energy spectra were collected under 662 keV gamma-ray excitation (Cs-137 source) and detection by a photomultiplier (Hamamatsu H7826). The light yield was around three times higher than that of BGO and almost homogeneous with increasing solidification fraction up to 0.32. The energy resolution was around 8%. Furthermore, scintillation decay time was around 23 ns and almost homogeneous all over the crystal.
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页码：1488 / 1491
页数：4
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