In this work, different types of polymer and MnO 2 cathode capacitors are tested for scintillation breakdown using a constant current stress (CCS) technique modified to allow detection of amplitudes and duration of current spikes. Monitoring of leakage currents with time under bias is used to assess the effect of scintillations. The appearance and composition of damaged sites are examined after deprocessing and cross-sectioning. Thermal processes during scintillations are analyzed, a mechanism of breakdown based on growth of conductive filaments in the dielectric is suggested, and self-healing processes in polymer and MnO 2 cathode capacitors is discussed.

中文翻译：

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钽电容器的击穿和自愈


在这项工作中，使用经过修改以允许检测电流尖峰的幅度和持续时间的恒流应力（CCS）技术来测试不同类型的聚合物和MnO 2 阴极电容器的闪烁击穿。监测偏压下漏电流随时间的变化用于评估闪烁的影响。去处理和横截面后检查受损部位的外观和成分。分析了闪烁期间的热过程，提出了基于电介质中导电丝生长的击穿机制，并讨论了聚合物和MnO 2 阴极电容器的自愈过程。