Analysis of uncertainties in the measurement of the space charge distribution in dielectrics
Analysis of uncertainties in the measurement of the space charge distribution in dielectrics
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电介质空间电荷分布测量的不确定度分析
DOI：
10.1088/1361-6501/acadfa
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发表时间：
2022-12
影响因子：
2.4
通讯作者：
Yewen Zhang
中科院分区：
文献类型：
--
作者：
Jiaping Pan;Zebin Cao;Feihu Zheng;Yewen Zhang
常用的空间电荷分布测量方法得到的结果往往是局部区域的表观和一维结果，可能存在各种因素引起的随机误差。在这项工作中，三个因素-样品厚度均匀性，压力波强度的均匀性，和空间电荷分布的均匀性，可能会导致测量的不确定性进行检查。测量不确定度影响着实验数据的分析和评价，特别是在激光诱导压力传播（LIPP）法测量双电极平板聚乙烯（PE）样品的实验中，这种不确定度尤为突出。通过激光光斑能量分布测量和空间电荷分布测量等辅助实验，分别对这些影响因素进行了研究。建立了一个清晰易懂的模型，讨论了这些因素对空间电荷分布测量不确定度的影响。
The results obtained by the commonly used space charge distribution measurement methods are frequently apparent and one-dimensional results of a localized area, and there may be random errors caused by various factors. In this work, three factors—sample thickness uniformity, pressure wave intensity uniformity, and space charge distribution uniformity—that may cause measurement uncertainties are examined. The analysis and evaluation of the experimental data are impacted by the measurement uncertainties, which are particularly noticeable in the experiments of semiconductive electrode-flat polyethylene (PE) samples using the laser-induced pressure propagation (LIPP) method. These factors are investigated separately with several auxiliary experiments, including laser beam spot energy distribution measurement and space charge distribution measurements at different measuring positions on the same uniform sample. A clear and intelligible model is developed to discuss the influence of these factors on the uncertainties in the space charge distribution measurement in dielectrics.
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