JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
Other TitleSurface Potential of Polyimide Film under Electron Irradiation at Cryogenic Temperature
Author(jpn)渡邉, 力夫
Author(eng)Watanabe, Rikio
Author Affiliation(jpn)東京都市大学
Author Affiliation(eng)Tokyo City University
Issue Date2019-01-31
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構特別資料: 第15回「宇宙環境シンポジウム」講演論文集
JAXA Special Publication: Proceedings of the 15th Spacecraft Environment Symposium
Start page87
End page91
Publication date2019-01-31
AbstractSurface potential of polyimide films (Kapton(R) 200H) under electron irradiation at cryogenic temperature was experimentally investigated because some spacecraft such as JWST (NASA) and SPICA (JAXA and ESA) are operated at cryogenic temperature. We constructed measurement systems of surface potential after electron beam irradiation at cryogenic temperature. Volume resistivities at cryogenic temperature were orders of magnitude larger than that of the room temperature. We derived an unified theoretical model of volume resistivity referred to VRH model (Variable Range Hopping model: Mott type) and TAH model (Thermally Activity Hopping model: Arrhenius type), and we clarified which model was dominant according to temperature. This enabled us to predict temperature dependence of volume resistivity of polyimide film as temperature variation from cryogenic to high temperature.
Description会議情報: 第15回宇宙環境シンポジウム (2018年10月30日-31日. 東北大学青葉サイエンスホール), 仙台市, 宮城県
形態: カラー図版あり
Physical characteristics: Original contains color illustrations
KeywordsDielectric material; Charge storage method; Volume resistivity; Cryogenics
Document TypeConference Paper
JAXA Category特別資料
NASA Subject CategorySpacecraft Design, Testing and Performance
Report NoJAXA-SP-18-009

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