電子線を照射した各種ポリマーの内部帯電現象
| العنوان: | 電子線を照射した各種ポリマーの内部帯電現象 |
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| المؤلفون: | Nagasawa, Kenichiro, Honjo, Masato, Tanaka, Yasuhiro, Watanabe, Rikio, Takada, Tatsuo |
| المصدر: | 宇宙航空研究開発機構特別資料: 第4回宇宙環境シンポジウム講演論文集 = JAXA Special Publication: Proceedings of the 4th Spacecraft Environment Symposium. :141-144 |
| بيانات النشر: | 宇宙航空研究開発機構, 2008. |
| سنة النشر: | 2008 |
| مصطلحات موضوعية: | spacecraft charging, electron beam, high polymer, electron irradiation, 宇宙機帯電, 高エネルギー電子, 電荷分布, molecular structure, 高分子, charge distribution, 誘電体, 宇宙機構造材料, 静電気放電, dielectric, cosmic ray, high energy electron, 電子照射, 帯電, electrostatic discharge, aerospace environment, charging, 航空宇宙環境, Physics::Space Physics, geosynchronous orbit, 分子構造, 同期軌道, 宇宙線, 電子ビーム, spacecraft construction material |
| الوصف: | The spacecraft like a communication or a broadcasting satellite flying in GEO (Geostationary Earth Orbit) is always exposed to plasma and/or radioactive-rays such as alpha-, beta- and gamma-rays. When the dielectric materials, in which the spacecraft is wrapped to keep temperature in it stable, are irradiated by the high energy electron beam, sometimes an unexpected accident due to an electrostatic discharge happens. The accident sometimes causes a serious mission error of the spacecraft. However, there remain many unknown factor about a charge accumulation in dielectric materials by irradiation of electron beam. Therefore, we need to measure the charge distribution in the bulk of dielectric materials. We have been developing a system for measuring such a charge distribution in dielectric materials using pressure wave propagation method. Using this system, we tried to measure the charge distribution under electron beam irradiated Low Density Polyethylene, Polyethylene Terephthalate, Polycarbonate, Polyethylene Naphthalate in addition to Polyimide and PTFE (PolyTetraFluoroEthylene) films which are used as a thermal control layer or a optical solar reflector of spacecrafts. We observed accumulation behavior of charge in each sample, survey relationship with each sample's molecular structure. As a result, It's believed that charging characteristics of insulating material is linked to benzene ring in each sample's molecular structure. 資料番号: AA0063997025 レポート番号: JAXA-SP-07-030 |
| اللغة: | Japanese |
| تدمد: | 1349-113X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=jairo_______::e86dc989aba55cee67967409e06a8584Test http://id.nii.ac.jp/1696/00005508Test/ |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.jairo.........e86dc989aba55cee67967409e06a8584 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1349113X |
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