Scintillation Properties of Praseodymium Activated Single Crystals
Scintillation Properties of Praseodymium Activated Single Crystals
复制标题
镨激活单晶的闪烁特性
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
A. Yoshikawa
中科院分区：
文献类型：
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作者：
W. Drozdowski;P. Dorenbos;R. Drozdowska;A. Owens;K. Kamada;K. Tsutsumi;Y. Usuki;T. Yanagida;A. Yoshikawa
对日本古河株式会社生产的 LuAG:Pr 的闪烁特性进行了研究。最好的晶体显示出高达 19000 ph/MeV 的光输出，在 662 keV 时的能量分辨率为 4.6%。发现闪烁产率是样品尺寸和温度的函数；加热至 450 K 时，其强度可增强 40%。放射发光光谱显示离子的 - 和 - 跃迁；后者的贡献随着温度的升高而增加。闪烁衰变很复杂，快衰变常数为 20 ns。的存在会诱导高背景活性。被认为是对许多应用有吸引力的材料。在本文中，我们提出了关于 :Pr 的标准表征和更先进的、先前未报道的研究的一些结果。我们的研究包括脉冲高度光谱、闪烁时间曲线和 78 至 600 K 之间的放射发光光谱的温度依赖性测量。我们还研究了闪烁产率的比例和尺寸依赖性，以及 LuAG:Pr 的固有活性。
Scintillation properties of LuAG:Pr grown by Fu- rukawa Co. Ltd., Japan, have been studied. The best crystals display light outputs up to 19000 ph/MeV and an energy resolu- tion of 4.6% at 662 keV. The scintillation yield is found to be a function of size and temperature of the sample; it can be enhanced by 40% upon heating to 450 K. Radioluminescence spectra show both - and - transitions of ions; the contribution of the latter increases with temperature. The scintillation decays are complex, with a fast decay constant of 20 ns. The presence of induces high background activity. regarded as an attractive material for a number of applications. In this paper we present a standard characterization and some results of more advanced, previously unreported studies on :Pr. Our research comprises temperature-depen- dent measurements of pulse height spectra, scintillation time profiles, and radioluminescence spectra between 78 and 600 K. We also investigate the proportionality and size dependence of scintillation yield, and the intrinsic activity of LuAG:Pr.