Comparative study of intrinsic luminescence in undoped transparent ceramic and single crystal garnet scintillators
Comparative study of intrinsic luminescence in undoped transparent ceramic and single crystal garnet scintillators
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DOI：
10.1016/j.optmat.2014.06.019
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发表时间：
2014-10-01
影响因子：
3.9
通讯作者：
Chani, Valery
中科院分区：
文献类型：
--
作者：
Fujimoto, Yutaka;Yanagida, Takayuki;Chani, Valery
比较了与未掺杂的Y(3)A(5)O(12) (YAG)和Lu(3)A(5)O(12) (LuAG)透明陶瓷和单晶的本征晶格缺陷相关的闪烁特性。与单晶相比，用 X 射线激发的陶瓷表现出相对较低的发射强度。陶瓷和单晶的衰变时间相似。这些参数约为 430 ns（YAG 陶瓷）、460 ns（YAG 单晶）、30 ns 和 1090 ns（LuAG 陶瓷）以及 25 ns 和 970 ns（LuAG 单晶）。根据Cs-137伽马射线照射下记录的脉冲高度光谱，两种陶瓷的闪烁光产额约为2950+/-290ph/MeV。然而，单晶对于YAG具有约14,300+/-1430ph/MeV的更高产率，对于LuAG具有约8350+/-830ph/MeV的更高产率。 (C) 2014 Elsevier B.V. 保留所有权利。
Scintillation properties associated with intrinsic lattice defects of undoped Y(3)A(5)O(12) (YAG) and Lu(3)A(5)O(12) (LuAG) transparent ceramics and single crystals are compared. The ceramics excited with X-ray demonstrated relatively low emission intensity when compared with that of the single crystals. Decay times of the ceramics and the single crystals were similar. These parameters were approximately 430 ns (YAG ceramic), 460 ns (YAG single crystal), 30 ns and 1090 ns (LuAG ceramic), and 25 ns and 970 ns (LuAG single crystal). According to the pulse height spectra recorded under Cs-137 gamma-ray irradiation, the scintillation light yield of the both ceramics were about 2950 +/- 290 ph/MeV. However, the single crystals had greater kight yield of about about 14,300 +/- 1430 ph/MeV for YAG and 8350 +/- 830 ph/MeV for LuAG. (C) 2014 Elsevier B.V. All rights reserved.