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首页> 外文会议>IEEE Conference on Electrical Insulation and Dielectric Phenomena >Space Charge in Electron-Beam Irradiated Cross-Linked Polyethylene (XLPE): Charge Implantation and Release from the Bulk
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Space Charge in Electron-Beam Irradiated Cross-Linked Polyethylene (XLPE): Charge Implantation and Release from the Bulk

机译：电子束辐射交联聚乙烯（XLPE）的空间电荷：从散装中灌输和释放

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The aim of the present work is to study the dynamics of the space charge in crosslinked polyethylene (XLPE) induced by electron beam irradiation. For this purpose three energies have been chosen so as to implant charges in a controlled way, in the volume, at different depths not too close to the electrodes. Pulsed Electro Acoustic (PEA) method was used to measure space charge in each sample, at the end of the irradiation process, in ambient conditions. The space charge measurements show the existence of two electron implantation sites after irradiation, one in the bulk at a depth depending on the irradiation energy and the other near the irradiated surface and a fixed position (25 μm). The application of the electric field shows that the charge implanted in the volume tends to be evacuated during the polarization. The charge accumulated persists during the relaxation and is stable after 1 hour. The current measurements reveal the impact of the irradiation in XLPE sample: the steady current measured on the irradiated sample is substantially higher compared to the one recorded on the non-irradiated specimens. Also a change in conduction mechanism is observed. The current recorded on XLPE irradiated weakly diverges from linearity with the electric field in the field range up to 40 kV/mm.
机译：本作者的目的是研究电子束照射诱导的交联聚乙烯（XLPE）中的空间电荷的动态。为此目的，已经选择了三种能量，以便以受控方式植入电荷，在体积中，在不太靠近电极的不同深度处植入电荷。在环境条件下，使用脉冲电声（豌豆）方法测量每个样品中的空间电荷，在辐射过程结束时。空间电荷测量显示在照射后的两个电子注入位点的存在，在块中的块中，根据照射能量和辐射表面附近的另一个，并且固定位置（25μm）。电场的应用表明，在偏振期间倾向于植入体积中的电荷趋于抽空。在弛豫期间累积的电荷累积，1小时后稳定。电流测量揭示了XLPE样品中辐射的影响：与在非照射标本上记录的辐照样品上测量的稳定电流基本上高得多。此外，观察到传导机构的变化。在XLPE上记录的电流从线性度照射弱发散，在电场范围内的电场范围高达40 kV / mm。

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