航天器用电子束辐照介质的空间电荷积累与衰减

Y. Kikuchi, Shinji Kashiwagi, T. Takada, H. Miyake, Y. Tanaka
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引用次数: 1

摘要

采用脉冲电声(PEA)方法研究了电子束辐照对航天器各种绝缘材料介电性能的影响。在太空环境中,航天器暴露在等离子体或放射性射线中。在这种情况下,覆盖航天器的多层绝缘材料被充电。有时电荷积累会对电气设备造成严重的损坏和绝缘材料的劣化。为了研究电子束辐照对介质电学性能的影响,测量了直流应力下电子束辐照材料的空间电荷分布和传导电流。从测量结果中发现,在直流应力下,一些辐照材料中电荷大量积累,而在相同应力下,未辐照材料中几乎没有电荷积累。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Space charge accumulation and degradation in electron beam irradiated dielectrics for spacecraft
Effect of electron beam irradiation on dielectric properties in various insulating materials for spacecraft is investigated using PEA (Pulsed Electro-Acoustic) method. In space environment, spacecraft is exposed to plasma or radioactive-rays. In such condition, multilayer insulating materials covering the spacecraft are charged up. Sometimes the charge accumulation causes to the serious damage to the electric devices and degradation of insulating materials. To investigate the change of the electrical properties of dielectrics by electron beam irradiation, we measure the space charge distributions and the conduction current in some e-beam irradiated materials under dc stress. From the measurement results, it was found that the large amount of charges accumulated in some irradiated materials under dc stress, while almost no charges accumulated in the non-irradiated materials under the same stress.
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