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Thermoluminescence for rare-earths doped tellurite glasses

机译:稀土掺杂碲酸盐玻璃的热致发光

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摘要

Thermoluminescence (TL) of TeO_2 glasses doped with 0.001 wt.% of different rare-earth oxides of the type, La_2O_3, CeO_2, Sm_2O_3, Nd_2O_3, Dy_2O_3, and Yb_2O_3 are measured. All glasses are prepared and irradiated under the same conditions. At all γ-dose levels, the peaks of their glow curves occur in 451-508 K. The intensities of the peaks are nearly linear in the dose range of 0.1-10 Gy. In terms of the TL response measured as a function of time, the traps causing the TL glow peaks are stable showing a fading less than 5% for a period of 1 month and become about 15% in 2 months. The activation energy of trap depth is calculated by different methods. Finally, two emission models of the TL phenomena for the present glasses are proposed.
机译:测量了掺有0.001 wt。%不同类型的稀土氧化物La_2O_3,CeO_2,Sm_2O_3,Nd_2O_3,Dy_2O_3和Yb_2O_3的TeO_2玻璃的热致发光(TL)。所有玻璃均在相同条件下准备和辐照。在所有γ剂量水平下,其辉光曲线的峰值出现在451-508K。在0.1-10 Gy的剂量范围内,峰值的强度几乎呈线性。就作为时间函数的TL响应而言,导致TL发光峰的陷阱稳定,在1个月的时间内衰减小于5%,并在2个月内变为约15%。陷阱深度的激活能通过不同的方法来计算。最后,提出了用于本眼镜的TL现象的两个发射模型。

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