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title低地球軌道環境におけるFEP 劣化に対する窒素分子寄与の可能性
Author(jpn)田川, 雅人; 大藪, 高詩; 安田, 茂; 横田, 久美子
Author(eng)Tagawa, Masahito; Oyabu, Takashi; Yasuda, Shigeru; Yokota, Kumiko
Author Affiliation(jpn)神戸大学大学院工学研究科; 神戸大学大学院工学研究科; 神戸大学大学院工学研究科; 神戸大学大学院工学研究科
Author Affiliation(eng)Graduate School of Engineering, Kobe University; Graduate School of Engineering, Kobe University; Graduate School of Engineering, Kobe University; Graduate School of Engineering, Kobe University
Issue Date2013-02-28
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構特別資料: 第9回宇宙環境シンポジウム講演論文集
JAXA special publication: Proceedings of the 9th Spacecraft Environment Symposium
Start page109
End page112
Publication date2013-02-28
AbstractPossibility of N2-induced erosion of fluoropolymer was discussed based on the ground-based experiment and flight data. Multiple composition beams with velocity of 8 km/s were formed with Ar+O2 target gas by the laser detonation source. The energy and composition of the beam, thus formed, were analyzed by time-of-flight measurements with a quadrupole mass spectrometer. It was found that atoms in different masses, O-atom and Ar, are accelerated to similar velocities, i.e., different translational energies (4.5 eV O- atom and 9 eV Ar). This is suitable for simulating sub-low Earth orbit neutral gas environment. Erosion yields of fluoropolymer by O-atom and by Ar were evaluated individually. It was found that the erosion yields of fluoropolymer by 9 eV Ar in the ground-based experiment and those by 9 eV N2 in LEO measured by MISSE-2 showed good agreement. In contrast, erosion yield of fluoropolymer by 5 eV O-atom in the ground-based experiment and that in the orbit were not consistent. These results strongly suggested that the erosion of fluoropolymer is due not by O-atom, but by Ar and N2.
Description会議情報: 第9回宇宙環境シンポジウム (2012年11月5日-6日. 東京都市大学・世田谷キャンパス), 東京
形態: カラー図版あり
Translation title: Probability of N2-induced erosion of fluoropolymer (FEP) in sub-low earth orbit neutral gas environment
Meeting Information: 9th Spacecraft Enivironment Symposium (November 5-6, 2012, Setagaya Campus, Tokyo City University), Tokyo Japan
Physical characteristics: Original contains color illustrations
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-12-017

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