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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >COMPUTERIZED GLOW CURVE DECONVOLUTION APPLIED TO THE ANALYSIS OF THE KINETICS OF PEAK 5 IN LIF-MG,TI (TLD-100)
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COMPUTERIZED GLOW CURVE DECONVOLUTION APPLIED TO THE ANALYSIS OF THE KINETICS OF PEAK 5 IN LIF-MG,TI (TLD-100)

机译：计算机辉光曲线去卷积在LIF-MG，TI（TLD-100）峰5动力学分析中的应用

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摘要

The kinetic parameters of peak 5 in LiF:Mg,Ti (TLD-100) were studied as a function of the duration of post-irradiation annealing at 165 degrees C. A post-irradiation anneal at 165 degrees C for 20 min reduces the intensity of the lower-temperature satellite, peak 4, to negligible levels. The shape of isolated peak 5 changes as a function of the duration of the post-irradiation annealing. All three kinetic parameters show important changes as the duration of the anneal increases. Computerized peak shape analysis shows that the order of kinetics of peak 5 increases from 1.2 +/- 0.05 (1 SD) following a 5 min anneal to 1.72 +/- 0.07 (1 SD) following a 30 min anneal. The activation energy increases from 1.75 eV after annealing for 5 min to 2 eV after annealing for 15 min and then remains constant for longer annealing times. However, the position of isolated peak 5 (T-max) does not vary with dose, illustrating the weakness of this criterion for determining the order of kinetics or alternately the breakdown of the cc model applied to peak 5. Our results indicate important structural modifications in the trapping structure of peak 5 as a function of annealing time and/or the presence of underlying defect reactions leading to these changes in the shape of peak 5. [References: 31]
机译：研究了LiF：Mg，Ti（TLD-100）中峰5的动力学参数与165°C辐照后退火时间的关系。在165°C辐照后退火20分钟降低了强度较低温度卫星的峰值4，可忽略不计。分离峰5的形状根据辐照后退火的持续时间而变化。随着退火时间的延长，所有三个动力学参数都显示出重要的变化。计算机化的峰形分析表明，峰5的动力学顺序从退火5分钟后的1.2 +/- 0.05（1 SD）增加到退火30分钟后的1.72 +/- 0.07（1 SD）。活化能从退火5分钟后的1.75 eV增加到退火15分钟后的2 eV，然后在更长的退火时间内保持恒定。但是，孤立峰5的位置（T-max）不会随剂量变化，这说明了确定动力学顺序或替代应用到峰5的cc模型分解的这一标准的弱点。我们的结果表明存在重要的结构修饰退火时间和/或潜在缺陷反应的存在导致峰5的形状发生变化的原因是峰5的捕获结构中的峰[5]。[参考文献：31]

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