Tl2LiYCl6: Large Diameter, High Performing Dual Mode Scintillator
Tl2LiYCl6: Large Diameter, High Performing Dual Mode Scintillator
复制标题
Tl2LiYCl6：大直径、高性能双模闪烁体
DOI：
10.1021/acs.cgd.7b00583
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发表时间：
2017
影响因子：
3.8
通讯作者：
K. Shah
中科院分区：
文献类型：
--
作者：
R. Hawrami;E. Ariesanti;H. Wei;J. Finkelstein;J. Glodo;K. Shah
Tl2LiYCl6:Ce (TLYC) 是最近发现的双模式伽马射线和中子闪烁体。到目前为止，已经研究了这种成分的小型晶体，但为了价格实惠的实际应用，需要大型晶体。在这项工作中，我们展示了生长尺寸高达 ⌀1” × 5.5” 的无裂纹单晶的成功努力。采用多种实验技术来研究闪烁特性。 ⌀1″ × 1.2″ TLYC圆柱的光输出为25,000 ph/MeV，在662 keV下其能量分辨率优于4%。热中子产生的伽马当量能量 (GEE) 为 1.89 MeVee，中子感生光产率为 47,000 ph/n。伽马射线和中子之间的脉冲形状辨别 (PSD) 已成功展示，当前品质因数 (FOM) 为 2.4。本文探讨了 TLYC 的晶体生长、闪烁特性和潜在应用。
Tl2LiYCl6:Ce (TLYC) is a recently discovered dual mode gamma-ray and neutron scintillator. So far small crystals of this composition have been studied, but for practical applications with affordable price, large-scale crystals are required. In this work, we present successful efforts to grow crack-free single crystals with sizes up to ⌀1″ × 5.5″. A variety of experimental techniques were employed to investigate the scintillation properties. A ⌀1″ × 1.2″ TLYC cylinder has a light yield of 25,000 ph/MeV, and its energy resolution is better than 4% at 662 keV. The gamma equivalent energy (GEE) produced by thermal neutron is 1.89 MeVee, along with a neutron induced light yield of 47,000 ph/n. Pulse shape discrimination (PSD) between gamma-rays and neutrons has been successfully shown with a current Figure-of-Merit (FOM) of 2.4. This article explores the crystal growth, scintillation properties, and potential applications of TLYC.