2026-03-11T10:44:14Z https://jaxa.repo.nii.ac.jp/oai

oai:jaxa.repo.nii.ac.jp:00006330 2023-06-21T07:57:44Z 1887:1891 9:789:1031:1066

Observation of internal charge behavior in electron beam irradiated polymers using acoustic method 福吉, 芙由子 大澤, 則之 田中, 康寛 高田, 達雄 渡辺, 力夫 冨田, 信之 Liu, Rongsheng Fukuyoshi, Fuyuko Osawa, Noriyuki Tanaka, Yasuhiro Takada, Tatsuo Watanabe, Rikio Tomita, Nobuyuki Liu, Rongsheng 電荷蓄積 宇宙機帯電 航空宇宙環境 ポリマー絶縁体 電子照射 電荷分布 静電放電 ポリテトラフルオロエチレン Kapton charge accumulation spacecraft charging aerospace environment polymeric insulating material electron irradiation charge distribution electrostatic discharge polytetrafluoroethylene Kapton Bulk charge accumulation in polymers under electron beam irradiation in vacuum environment was observed using newly developed measurement system. Recently, some accidents in spacecraft due to the charging up of the electric potential have been reported. Some of them seem to be caused by discharge due to the charge accumulation in bulk of insulating materials at relatively higher altitude environment. However, there had been no useful method to measure the bulk charge in materials. On the other hand, we had developed the bulk charge measurement system for the polymeric insulation materials used in insulating materials of power cable. Therefore, we have applied this system to the polymers used in spacecraft. Using the improved system, we have observed internal charge behavior in Kapton and PTFE films under electron beam irradiation in vacuum condition. It was found that an amount of accumulated charge in PTFE was much larger than that in Kapton. 資料番号: AA0049206015 レポート番号: JAXA-SP-05-001E 宇宙航空研究開発機構 Japan Aerospace Exploration Agency (JAXA) 2005-08-01 eng conference paper https://jaxa.repo.nii.ac.jp/records/6330 1349-113X AA11984031 宇宙航空研究開発機構特別資料 JAXA Special Publication: 9th Spacecraft Charging Technology Conference JAXA-SP-05-001E 117 122 https://jaxa.repo.nii.ac.jp/record/6330/files/49206015.pdf application/pdf 1.4 MB 2020-01-16