真空中の電子照射による絶縁物上帯電分布の形成機構

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  • Formation Mechanism of Charge Distribution on Dielectric Surface by Electron Beam Irradiation in Vacuum
  • シンクウ チュウ ノ デンシ ショウシャ ニ ヨル ゼツエン ブツジョウ タイデン ブンプ ノ ケイセイ キコウ

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抄録

In space environment, severe conditions like electron irradiation may cause the electrostatic charging and discharge on dielectric surface of space apparatus. In order to investigate the charging mechanism in vacuum, we irradiated electron beam to different kind of dielectric samples and produced electrostatic charging on their surface. We measured 2-dimensional distribution of surface potential on the dielectric samples and displacement current to back electrode. Experimental results revealed that the charging process is mainly influenced by electron energy, secondary electron emission and electric field around the dielectric samples.

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