Modeling the Pre-Dose Effect in Thermoluminescence
Modeling the Pre-Dose Effect in Thermoluminescence
复制标题
模拟热释光中的给药前效应
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
P. L. Leung
中科院分区：
文献类型：
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作者：
Reuven Chen;P. L. Leung
研究了经β或γ辐照后再经高温活化后的石英感度的提高。以前提出的模型，包括一个储器，通过储器孔进入复合中心，从而增加了对给定测试剂量的敏感性，现在给出了一个具体的数学形式。对辐照和加热不同阶段的微分方程组依次进行数值求解，以模拟发生的物理过程。根据灵敏度对激发剂量的依赖关系，特别是在灵敏度接近饱和的高剂量下，检验了指数逼近饱和的假设，表明即使在这种复杂的情况下，指数近似也是有效的。
The increase of sensitivity of quartz by β or γ irradiation, followed by high temperature activation has been studied. The model previously suggested, including a reservoir through which holes get into the recombination centre, thus increasing the sensitivity to a given test dose, is now given a concrete mathematical form. Sets of simultaneous differential equations for the different stages of irradiation and heating are numerically solved sequentially so as to simulate the physical processes taking place. The dependence of the sensitivity on the excitation dose is followed, in particular at the high doses where the sensitivity approaches saturation, The assumption of exponential approach to saturation is tested, showing that, indeed, even in this complicated situation the exponential approximation is valid.