Eu Concentration Dependence on Scintillation Properties of Eu doped SrI2 Single Crystals Grown by Modified Micro-Pulling-Down Method
Eu Concentration Dependence on Scintillation Properties of Eu doped SrI2 Single Crystals Grown by Modified Micro-Pulling-Down Method
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改良微下拉法生长的 Eu 掺杂 SrI2 单晶闪烁性能与 Eu 浓度的关系
DOI：
10.1016/j.optmat.2014.02.026
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发表时间：
2014
影响因子：
3.9
通讯作者：
Akira Yoshikawa
中科院分区：
文献类型：
--
作者：
Kei Nishimoto;Yuui Yokota;Shunsuke Kurosawa;Kei Kamada;Yutaka Fujimoto;Takahiro Kojima;Fumio Nitanda;Yasunori Furukawa;Akira Yoshikawa
采用改进的微下拉（μ-PD）法生长了不同Eu含量的Eu：SrI 2（Eu：SrI 2）单晶，研究了Eu含量对闪烁性能的影响。得到了1%、5%、7.5%、10%和15% Eu：SrI 2单晶，晶体透明性好，无可见夹杂物。实际生长的晶体中Eu的含量几乎与标称成分相同。在X射线辐射发光光谱中，在所有晶体中观察到435 nm附近的发射峰。Eu7.5mol%：SrI 2晶体的光产额最高，为78，000 ph/MeV，能量分辨率最小，为3.7%。
Eu doped SrI2(Eu:SrI2) single crystals with various Eu contents were grown by a modified micro-pulling-down (μ-PD) method and effects of Eu concentration on scintillation properties were investigated. Eu 1%, 5%, 7.5%, 10% and 15%:SrI2single crystals were obtained and all as-grown crystals indicated high transparency without visible inclusion. Actual Eu contents in the grown crystals were almost same as nominal compositions. In the X-ray radioluminescence spectra, emission peaks around 435 nm were observed in all crystals. Eu7.5 mol%:SrI2crystals indicated the highest light yield, 78,000 ph/MeV, and the smallest energy resolution, 3.7%.