The analysis by TSDC of a large variety of\udcables subjected to long annealing times, has resulted in spectra that sometimes show an oscillation of the current peak observed at 99°C. This process has been observed\udin some cables only and it is scarcely reproducible. We present an explanation of this behavior based on the formation\udof charge packets and some other assumptions:\udcharge injection occurs mainly from the negative electrode, and chemical components that act as trapping centers are diffused continously from the semiconducting layers\udinto the bulk during annealing. When the field is applied the negative electrode injects charge that get trapped in\udthese centers, so that a virtual electrode is formed. The electric field created by this layer results in a decrease of the field in the gap between the injecting and virtual electrodes, preventing new charge injection. On the other hand, during polarization the virtual electrode shifts through the insulation bulk towards the opposite electrode.\udThis layer that acts as a virtual electrode becomes neutral by means of recombination when it reaches the opposite electrode, so that the electric field in the region between\udthe electrodes recovers its initial value and the whole process happens again cyclically. This model can explain the\udobserved TSDC oscillating spectra of annealed samples.\udIt can also explain why the oscillations can not be observed in most cases.
展开▼
机译：通过TSDC对各种各样的经过长时间退火处理的电缆进行分析，得出的光谱有时会显示在99°C观察到的电流峰值的振荡。仅在某些电缆中观察到此过程，并且几乎不可复制。我们基于电荷包的形成\ udud和其他一些假设对这种行为进行了解释：\ udcharge注入主要从负极发生，并且充当捕获中心的化学成分从半导体层不断扩散\ udin在整个过程中退火。当施加电场时，负电极注入被俘获在\这些中心的电荷，从而形成虚拟电极。由该层产生的电场导致注入电极与虚拟电极之间的间隙中的电场减小，从而阻止了新的电荷注入。另一方面，在极化过程中，虚拟电极通过绝缘体移向相对电极。\ ud当虚拟电极到达相对电极时，它通过重组而变为中性，因此该区域中的电场电极之间的电极恢复其初始值，整个过程再次循环发生。该模型可以解释退火样品的\\\\\\\\\\\\ s \ n的，观察到的TSDC振荡光谱。\\\\它也可以解释为什么在大多数情况下不能观察到振荡。
展开▼
