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Thermoluminescence behaviour of GdAIO_3:Yb~(3+) under gamma exposure

机译：γ暴露下GdAIO_3：Yb〜（3+）的热致发光行为

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摘要

Thermoluminescence behaviour of Yb3+ doped GdAlO3 was studied for solution combustion synthesised phosphor. The TL glow curve was recorded under gamma radiation. The Tl glow curve was recorded for various heating rate for constant 0.25 kGy gamma radiation to optimize the heating rate. The optimized heating rate was obtained at 4 A degrees C s(-1). The effect of gamma dose on TL behaviour of the phosphor was studied by recording the TL for different gamma radiation dose from 0.25 to 1.25 kGy. For lower gamma dose the TL glow peak consists kinked peak with T-m at 397 and 432 K. As the gamma dose increases the T-m at lower temperature side vanished and the TL glow curve consists only one peak of higher temperature i.e. 432 K. To explain the variation in TL behaviour with variable gamma dose the TL glow curve for different gamma dose was analysed by using computerized glow curve deconvolution method. The kinetic parameters were calculated for all the deconvoluted peaks by using Chen's peak shape method. Activation energy for higher temperature peak is more than lower temperature peak due to deeper and shallow traps respectively.
机译：研究了Yb3 +掺杂的GdAlO3的热致发光行为。在γ辐射下记录了TL辉光曲线。对于恒定的0.25kGyγ辐射，记录了各种加热速率的T1辉光曲线，以优化加热速率。在4 A℃s（-1）下获得最佳加热速率。通过记录从0.25到1.25 kGy的不同γ辐射剂量的TL，研究了γ剂量对磷光体TL行为的影响。对于较低的伽玛剂量，TL辉光峰由397和432 K处的Tm组成的扭结峰。随着伽玛剂量的增加，较低温度侧的Tm消失，并且TL辉光曲线仅包含较高温度的一个峰，即432K。 γ剂量变化时TL行为的变化通过使用计算机化的辉光曲线去卷积方法分析了不同γ剂量的TL辉光曲线。使用Chen的峰形方法计算了所有反褶积峰的动力学参数。分别由于较深和较浅的陷阱，较高温度峰的活化能大于较低温度峰。

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