Making the invisible visible: observing the UV-reversal effect in quartz using radiofluorescence

Making the invisible visible: observing the UV-reversal effect in quartz using radiofluorescence
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让不可见变得可见:使用放射荧光观察石英中的紫外线反转效应

DOI:
10.1088/1361-6463/aacfd0
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发表时间:
2018
期刊:
Journal of Physics D: Applied Physics
影响因子:
--
通讯作者:
Schmidt
Schmidt
中科院分区:
--
文献类型:
--
作者:
Friedrich;J. Kreutzer;Schmidt

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相似文献

前剂量效应是石英发光中最著名的现象之一。它指的是在辐射预曝光和退火之后剂量敏感性的增加。自20世纪70年代以来,这种现象的理论描述就存在,并广泛用于最近的发光模型。然而,也已经描述了相反的效果,即由于用远UV光照射样品而降低发光灵敏度的不太为人所知的“UV反转”效果。这两种效应都是在小测试剂量后用热释光(TL)检测的,并使用110 C峰的响应间接观察效应。在这里,我们提出了一个更直接的测量这两种现象通过紫外-放射性荧光(UV-RF),这是在照射过程中发出的发光。因此,TL测量的需要已经过时。此外,我们能够计算从发光中心驱逐空穴的时间速率,并将该值应用到现有模型中,以获得对石英发光的更全面描述。数值模拟与实验数据吻合良好。
The pre-dose effect is one of the most well-known phenomena in quartz luminescence. It refers to an increase in dose sensitivity subsequent to radiation pre-exposure and annealing. A theoretical description of this phenomenon exists since the 1970s and is widely used in recent luminescence models. However, also the opposite effect has been described, the less known'UV-reversal'effect which reduces the luminescence sensitivity due to illuminating the sample with far UV light. Both effects were detected with thermoluminescence (TL) following a small test dose and observing the effect indirectly using the response of the 110 C peak. We here present a more direct measurement of both phenomena via UV-radiofluorescence (UV-RF), which is the luminescence emitted during irradiation. Therefore, the need of a TL measurement is obsolete. Furthermore, we were able to calculate a time rate of eviction of holes from the luminescence centre and implement this value into existing models to obtain a more comprehensive description of quartz luminescence. Numerical simulations are in good agreement with experimental data.
求解常微分方程以了解发光:“RLumModel”,一种使用 R 模拟石英发光的高级研究工具
DOI: 10.1016/j.quageo.2016.05.004
发表时间: 2016
影响因子: 2.7
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