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首页> 外文期刊>Radiation Protection Dosimetry >COMPARATIVE STUDIES ON THE THERMOLUMINESCENT PROPERTIES OF SINTERED PELLETS OF NATURAL AND SYNTHETIC CaF_2 FOR UV DOSIMETRY
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COMPARATIVE STUDIES ON THE THERMOLUMINESCENT PROPERTIES OF SINTERED PELLETS OF NATURAL AND SYNTHETIC CaF_2 FOR UV DOSIMETRY

机译：天然和合成CaF​​_2紫外光剂量烧结片的热释光性能的比较研究

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摘要

The phototransferred thermoluminescence (PTTL) of sintered pellets of natural CaF_2 from Brazil is compared with that of CaF_2 doped with Ce~(3+) and/or Dy~(3+). It is shown that the excitation spectrum provides a convenient way to find an optimum condition of pre-heat treatment of sintered CaF_2 after UV irradiation. The sintered CaF_2 containing a small amount of Ce~(3+) (0.2 mol) shows a strong glow peak around 90degC after UV irradiation. On co-doping with Dy~(3+) in CaF_2:Ce~(3+), the prominent glow peak shifts to 270degC. The peak intensity shows a linear response to the UV irradiation dose. The recombination process of these main glow peaks is discussed on the basis of the TL emission and the excitation peaks caused by the relevant impurities.
机译：比较了来自巴西的天然CaF_2的烧结球团与掺杂Ce〜（3+）和/或Dy〜（3+）的CaF_2的光转移热致发光（PTTL）。结果表明，激发光谱为紫外辐照后寻找烧结CaF_2预热处理的最佳条件提供了便利的途径。含有少量Ce〜（3+）（0.2 mol）的烧结CaF_2在UV照射后在90°C附近显示出很强的辉光峰。在CaF_2：Ce〜（3+）中与Dy〜（3+）共掺杂时，显着的辉光峰移至270degC。峰值强度显示出对紫外线照射剂量的线性响应。在TL发射和由相关杂质引起的激发峰的基础上，讨论了这些主要辉光峰的重组过程。

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