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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >A comparative study of the models dealing with localized and semi-localized transitions in thermally stimulated luminescence
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A comparative study of the models dealing with localized and semi-localized transitions in thermally stimulated luminescence

机译：热刺激发光中局部和半局部转变模型的比较研究

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摘要

Different models dealing with localized and semi-localized transitions, namely Chen-Halperin, Mandowski and the model based on the Braunlich-Scharmann (BS) approach are compared. It has been found that for recombination dominant situations ( r < 1 where r is the retrapping parameter for localized transitions), the TSL glow curves arising from localized recombination coincide with all three models whereas for r 1, the three models differ. This implies that for localized transitions under recombination dominant situations, the Chen-Halperin model is the best representative of the thermally stimulated luminescence ( TSL) process. It has also been found that for the TSL glow curves arising from delocalized recombination in Mandowski's semi-localized transitions model, the double peak structure of the TSL glow curve is a function of the radiation dose as well as of the heating rate. Further, the double peak structure of the TSL glow curves arising from delocalized recombination disappears at low doses as well as at higher heating rates. It has also been found that the TSL glow curves arising from delocalized recombination in the semi-localized transitions model based on the BS approach do not exhibit double peak structure as observed in the Mandowski semi-localized transitions model.
机译：比较了处理局部和半局部过渡的不同模型，即Chen-Halperin，Mandowski和基于Braunlich-Scharmann（BS）方法的模型。已经发现，对于重组占优势的情况（r <1，其中r是局部转移的重新捕获参数），由局部重组产生的TSL辉光曲线与所有三个模型都一致，而对于r 1，这三个模型是不同的。这意味着对于在重组占优势的情况下的局部过渡，Chen-Halperin模型是热激发发光（TSL）过程的最佳代表。还已经发现，对于在曼多夫斯基的半局部转变模型中由于离域重组而产生的TSL辉光曲线，TSL辉光曲线的双峰结构是辐射剂量以及加热速率的函数。此外，由于低位重组以及在较高加热速率下，由离域重组产生的TSL辉光曲线的双峰结构消失了。还已经发现，在基于BS方法的半本地化转变模型中，由于非本地化重组而产生的TSL辉光曲线不像曼多夫斯基半本地化转变模型中所观察到的那样呈现出双峰结构。

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