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首页> 外文期刊>Radiation measurements >Thermoluminescence efficiency and glow curves of Cr-doped Al2O3 ceramic TLD for a wide linear energy transfer range
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Thermoluminescence efficiency and glow curves of Cr-doped Al2O3 ceramic TLD for a wide linear energy transfer range

机译：用于宽线性能量转印范围的CR掺杂Al2O3陶瓷TLD的热致发光效率和发光曲线

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摘要

We investigated the thermoluminescence (TL) efficiency and the glow curve of Cr-doped alumina (Al2O3) ceramic thermoluminescent dosimeters (TLDs) for heavy charged particles. The TLDs were irradiated with beams of protons, helium, and carbon ions. A 6-MV X-ray was used as the reference radiation for investigating the relative TL efficiency. The relative TL efficiency reaches its peak when the linear energy transfer (LET) is approximately 6 keV/mu m and decreases with increasing LET. Moreover, the relative TL efficiency was 1.09 for the helium beam (LET: 11.5 keV/mu m) and 1.22 for the carbon beam (LET: 13.3 keV/mu m). This indicates that the relative TL efficiency of a Cr-doped Al2O3 ceramic TLD varies not only with the LET but also with the particle species. In order to investigate the relationship between the trap center of the Cr-doped Al2O3 ceramic TLD and the LET, the glow curve for each irradiation condition was also measured. As a result, the shape of the glow curve remained the same for a wide LET range, between 0.5 keV/mu m and 128 keV/mu m.
机译：我们研究了重型带电粒子的Cr掺杂氧化铝（Al2O3）陶瓷热致敏剂剂量计（TLD）的热致发光（TL）效率和辉光曲线。用质子，氦气和碳离子的光束照射TLD。使用6-MV X射线作为参考辐射来研究相对TL效率。当线性能量转移（假设）约为6keV / mu m时，相对T1效率达到其峰值，并且随着越来越多的情况而减小。此外，对于氦束（Let：11.5keV / mu m）和1.22用于碳束的相对T1效率为1.09（让：13.3kev / mu m）。这表明CR掺杂的Al2O3陶瓷TLD的相对T1效率不仅随颗粒物种而异。为了研究Cr掺杂的Al2O3陶瓷TLD的陷阱中心与允许的关系，还测量了每个照射条件的发光曲线。结果，辉光曲线的形状对于宽的范围，在0.5kev / mu m和128kev / mu m之间保持不变。

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