Tang K, Cui H, Zhu H, Liu Z, Fan H
Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 204, Beijing 102205, PR China.
Radiat Prot Dosimetry. 2013 Jul;155(2):141-5. doi: 10.1093/rpd/ncs333. Epub 2013 Jan 12.
The 3D thermoluminescent spectra and glow curves of LiF:Mg,Cu,Si with various Mg, Cu and Si concentrations were measured. The shapes of the glow curves in LiF:Mg,Cu,Si, LiF:Mg,Cu and LiF:Mg,Si are similar and the glow curves have peaks at approximately the same temperatures, but with significantly different intensities. Neither the temperature of the glow peak nor the wavelength of the emission maximum changes with variation of dopants concentrations when Cu is more than 0.01 mol % in LiF:Mg,Cu,Si. The spectrum structure in LiF:Mg,Cu,Si, LiF:Mg,Cu and LiF:Mg,Si is similar in the 300-550 nm range. Some weak emissions around 610 nm are shown in LiF:Mg,Cu,Si with a Cu concentration of 0.01 mol % and in LiF:Mg,Si. It is concluded that Mg dopant mainly plays a role in the formation of trapping centres, 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.
测量了不同Mg、Cu和Si浓度的LiF:Mg,Cu,Si的三维热释光光谱和发光曲线。LiF:Mg,Cu,Si、LiF:Mg,Cu和LiF:Mg,Si中发光曲线的形状相似，且发光曲线在大致相同的温度处有峰值，但强度有显著差异。当LiF:Mg,Cu,Si中Cu含量超过0.01 mol%时，发光峰温度和发射最大值波长均不随掺杂剂浓度的变化而改变。LiF:Mg,Cu,Si、LiF:Mg,Cu和LiF:Mg,Si在300 - 550 nm范围内的光谱结构相似。在Cu浓度为0.01 mol%的LiF:Mg,Cu,Si和LiF:Mg,Si中显示出610 nm左右的一些微弱发射。得出的结论是，Mg掺杂剂主要在俘获中心的形成中起作用，Cu和Si都在主要发射过程中起作用，并且Cu在减少610 nm左右的发射方面也起作用。
