Tang K, Fan H, Cui H, Zhu H, Liu Z
State Key Laboratory of NBC Protection for Civilian, PO Box 1044 Ext. 200, Beijing 102205, P.R. China Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 204, Beijing 102205, P.R. China
Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 204, Beijing 102205, P.R. China.
Radiat Prot Dosimetry. 2015 Feb;163(3):288-91. doi: 10.1093/rpd/ncu198. Epub 2014 Jun 25.
The 3-D thermoluminescence spectra and glow curves of LiF:Mg,Cu,Si, LiF:Mg,Cu, LiF:Mg,Si and LiF:Cu,Si with low concentrations of Mg and Cu were measured and were compared with those with high concentrations to investigate further the role of dopants in LiF:Mg,Cu,Si material. The shape of glow curves of the four samples is similar; however, LiF:Cu,Si sample had no Mg dopant. It is concluded that the TL emission to be from self-trapped excitons in LiF, and this emission could be enhanced and altered by Mg, Cu and Si dopants in LiF:Mg,Cu,Si; all three dopants are necessary to obtain the bright TL emission and may be involved in the luminescence process; Mg seems to be the most essential dopant and Cu is involved in the trapping although the role of Mg dominates; both Cu and Si play a role in the main emission process and Cu also plays a role in reducing the emission around 610 nm.
测量了低浓度Mg和Cu的LiF:Mg,Cu,Si、LiF:Mg,Cu、LiF:Mg,Si和LiF:Cu,Si的三维热释光光谱和发光曲线，并将其与高浓度的样品进行比较，以进一步研究掺杂剂在LiF:Mg,Cu,Si材料中的作用。四个样品的发光曲线形状相似；然而，LiF:Cu,Si样品没有Mg掺杂剂。得出的结论是，热释光发射来自LiF中的自陷激子，并且这种发射可以被LiF:Mg,Cu,Si中的Mg、Cu和Si掺杂剂增强和改变；所有三种掺杂剂对于获得明亮的热释光发射都是必要的，并且可能参与发光过程；Mg似乎是最关键的掺杂剂，Cu参与俘获过程，尽管Mg起主导作用；Cu和Si都在主要发射过程中起作用，并且Cu在降低610nm左右的发射方面也起作用。
