Tl2LiYCl6 (Ce3+): New Tl-based Elpasolite Scintillation Material

被引：29

作者：

Kim, H. J. ^{[1
]}

Rooh, Gul ^{[2
]}

Park, H. ^{[1
]}

Kim, Sunghwan ^{[3
]}

机构：

[1] Kyungpook Natl Univ, Dept Phys, Taegu 702701, South Korea

[2] Abdul Wali Khan Univ, Dept Phys, Mardan 23200, Pakistan

[3] Cheongju Univ, Dept Radiol Sci, Cheongju 363764, South Korea

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2016年 / 63卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

Decay time; elpasolite; energy resolution; light yield; scintillation properties; Tl2LiYCl6; X-ray excitation; CRYSTALS; LUMINESCENCE; RAY;

D O I：

10.1109/TNS.2016.2530822

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：

New single crystals of Ce-doped (1% and 10%) Tl2LiYCl6 (TLYC) were investigated under X-ray and gamma-ray excitation. This material belongs to Chloro-elpasolite crystal family and was grown by the two-zone vertical Bridgman technique. X-ray-induced luminescence shows typical Ce3+ - ion emission between 350 and 530 nm peaking at 430 nm. Under 662 keV gamma-rays excitation, best energy resolution of 4.8% (FWHM) was found for 1% Ce-concentration. For the same Ce-concentration, a maximum light yield of similar to 30 500 +/- 3500 ph/MeV was observed at room temperature. Under gamma-ray excitation, three decay time components were observed for all Ce-doped samples. Effective Z-number and density of Tl2LiYCl6 were found to be 69 and 4.58 g/cm(3), respectively. Due to highly hygroscopic nature of this compound, extra attention was devoted during handling and data taking processes. Overall, the scintillation properties confirm that this material is a promising candidate for medical imaging and radiation detection.

引用

页码：439 / 442

页数：4

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