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Other TitleMeasurement of distribution of photoemission current of surface materials used for satellite
Author(jpn)岡野 拓哉; 山納 康; 小林 信一; 仁田 工美
Author(eng)Okano, Takuya; Yamano, Yasushi; Kobayashi, Shinichi; Nitta, Kumi
Author Affiliation(jpn)埼玉大学; 埼玉大学; 埼玉大学; 宇宙航空研究開発機構
Author Affiliation(eng)Saitama University; Saitama University; Saitama University; Japan Aerospace Exploration Agency (JAXA)
Issue Date2008-03-31
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication title第4回宇宙環境シンポジウム講演論文集
Proceedings of the 4th Spacecraft Environment Symposium
Start page125
End page128
Publication date2008-03-31
AbstractSome kinds of film and paint-type coating materials are used as a thermal control material for the artificial satellite. It is necessary to survey the characteristics of the thermal, optical, mechanical and electrical properties about them. This report describes results of measurement of the photoemission current from the film and paint-type coating materials excited by ultraviolet-light. The used film samples were four kinds of materials (germanium coating, ITO (Indium Tin Oxide) coating, nonconductive) and the used coating samples were seven kinds of white paint materials (inorganic conductive, inorganic nonconductive, silicon based conductive, silicon based nonconductive) which are used for the artificial satellite. The following measurement results were obtained. Photoemission sites on each sample were distributed into active area and inactive area. Photoemission currents value of conductive samples are larger than those of nonconductive samples except for white paint B. Photoemission currents of Ge-coated films are uniformly distributed all over the sample. The current values are less than those of ITO-coated film. Photoemission currents value of silicon based samples were smaller than those of inorganic samples. Distributions of active area and inactive area about photoemission sites on white paint materials is greater than those of film samples.
DescriptionJAXA Special Publication
Keywordsaerospace environment; satellite surface; spacecraft construction material; photoelectron; electric current; spacecraft charging; electric discharge; paint; electrical resistance; emission spectrum; 航空宇宙環境; 衛星表面; 宇宙機構造材料; 光電子; 電流; 宇宙機帯電; 放電; 塗料; 電気抵抗; 発光スペクトル
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-07-030

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