Effects of Na and K co-doping on growth and scintillation properties of Eu:SrI2 crystals

被引：4
|
作者：
Ito, Tomoki [1 ]
Yokota, Yuui [2 ]
Kurosawa, Shunsuke [1 ,2 ]
Kral, Robert [3 ]
Pejchal, Jan [2 ,3 ]
Ohashi, Yuji [1 ]
Kamada, Kei [2 ,4 ]
Nikl, Martin [3 ]
Yoshikawa, Akira [1 ,2 ,4 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan
[2] Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Aoba Ku, 6-6-10 Aramaki, Sendai, Miyagi 9808579, Japan
[3] Inst Phys AS CR, 10 Cukrovarnicka, Prague 16200 6, Czech Republic
[4] C&A Corp, Aoba Ku, 6-6-40 Aramaki, Sendai, Miyagi 9808579, Japan
来源：
RADIATION MEASUREMENTS | 2016年 / 90卷
基金：
欧盟地平线“2020”; 日本学术振兴会; 日本科学技术振兴机构;
关键词：
Eu:SrI2; Scintillator; Single crystal; Alkali metal; Light yield; Non-proportionality; SINGLE-CRYSTALS;
D O I：
10.1016/j.radmeas.2016.01.025
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
We grew Na and K co-doped Eu:SrI2 [Na,Eu:SrI2 and K,Eu:SrI2] crystals by a modified micro-pulling down method to reveal the co-doping effects on the crystal growth and scintillation properties. The non-codoped, Na0.5%, Na1.0%, K0.5% and K1.0%,Eu:SrI2 crystals indicated high transparency while the milky parts were generated in the Na5.0% and K5.0%,Eu:SrI2 crystals. The light yields of Na,Eu:SrI2 and K,Eu:SrI2 crystals under gamma-ray irradiation were decreased by the Na and K co-doping. On the other hand, there was a small change within 940-1020 ns in the decay times by the Na and K co-doping. In the light yield proportionality under gamma-ray irradiation, the non-proportionality in the low energy region was improved by Na and K co-doping. (C) 2016 Published by Elsevier Ltd.
引用
收藏
页码：157 / 161
页数：5
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