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目的探讨在退火温度240℃条件下,不同冷却方式对热释光探测器分散性、灵敏度及发光曲线的影响,探究最优化冷却条件。方法将分散性为±5%的LiF:Mg,Cu,P热释光探测器取出96片,随机分为12个小组,每小组8片,首先进行退火处理,随后对各组进行不同方式的冷却,在标准辐照源照射完成后进行测量。实验结果用SPSS软件进行数据统计描述与分析。结果 5℃的冷却条件和应用风扇的情况下,实验结果的变异系数为最小(3.6%),发光曲线的形状、一致性最好。结论退火冷却方式对实验结果有明显影响,240℃退火条件下的最优化冷却方式为5℃的冷却温度和应用风扇。
Objective To investigate the influence of different cooling methods on the dispersivity, sensitivity and luminescence curve of pyro luminescence detector at annealing temperature of 240 ℃, and to explore the optimal cooling conditions. Methods Sixty-six LiF: Mg, Cu, P pyro luminescence detectors with dispersion of ± 5% were randomly divided into 12 groups of 8 in each group. The samples were annealed first and then different groups Cool down and measure after the standard irradiation source is irradiated. Experimental results using SPSS software for data statistical description and analysis. Results Under the cooling condition of 5 ℃ and the fan application, the coefficient of variation (CV) was the minimum (3.6%) and the shape and consistency of the luminescence curve were the best. Conclusions The annealing cooling method has a significant effect on the experimental results. The optimal cooling method at 240 ℃ is the cooling temperature of 5 ℃ and the application of the fan.