Properties of Sm-Doped SrCl2 Crystalline Scintillators
Properties of Sm-Doped SrCl2 Crystalline Scintillators
复制标题
DOI：
10.3390/cryst12040517
复制
发表时间：
2022-04
期刊：
影响因子：
2.7
通讯作者：
D. Nakauchi;Y. Fujimoto;Takumi Kato;N. Kawaguchi;T. Yanagida
中科院分区：
文献类型：
--
作者：
D. Nakauchi;Y. Fujimoto;Takumi Kato;N. Kawaguchi;T. Yanagida
制备了Sm掺杂的SrCl 2晶体，并对其发射光谱、衰减曲线和脉冲高度等闪烁特性进行了研究。在X射线照射下，在680 nm处观察到一个宽的吸收带，表明其主要来源于Sm ~（2+）的5d-4f跃迁。衰减曲线近似为一个衰减时间为10 μs的指数函数，衰减时间常数是Sm 2+的典型衰减时间常数。从137 Cs γ射线的脉冲高度来看，0.1%Sm：SrCl 2显示出33，000光子/MeV的光产额。
Sm-doped SrCl2 crystals were prepared, and the scintillation properties such as emission spectra, decay profiles, and pulse height were investigated. Under X-ray irradiation, a broad band can be observed at 680 nm, which indicates that the major origin is due to 5d-4f transitions of Sm2+. The decay curve is approximated by one exponential function with a decay time of 10 μs, and the decay time constant is typical for Sm2+. From the pulse height of 137Cs γ-rays, 0.1% Sm:SrCl2 shows a light yield of 33,000 photons/MeV.