JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
64542017.pdf1.22 MB
Other TitleObservation of surface discharge under low pressure using LED light source and Pockels effect
Author(jpn)鈴木, 祥太; 八島, 巧実; 小宮山, 洋平; 高田, 達雄; 三宅, 弘晃; 田中, 康寛
Author(eng)Suzuki, Shota; Yashima, Takumi; Komiyama, Yohei; Takada, Tatsuo; Miyake, Hiroaki; Tanaka, Yasuhiro
Author Affiliation(jpn)東京都市大学; 東京都市大学; 東京都市大学; 東京都市大学; 東京都市大学; 東京都市大学
Author Affiliation(eng)Tokyo City University; Tokyo City University; Tokyo City University; Tokyo City University; Tokyo City University; Tokyo City University
Issue Date2010-02-26
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication titleJAXA special publication: Proceedings of the 6th Spacecraft Enivironment Symposium
宇宙航空研究開発機構特別資料: 第6回「宇宙環境シンポジウム」講演論文集
Publication date2010-02-26
AbstractTwo dimensional dynamic surface discharge phenomena have been investigated using an electro-optical Pockels effect with a flat red-light source of LED (Light Emitting Diode) array. To make clear the surface condition damaged due to the cosmic ray such as high energy electrons, photon and gamma ray, etc., the size of electro optical measurement system should be down to less than 70 mm cubic and the pressure inside the vessel also should be reduced less than atmosphere pressure. We have experimentally studied the dynamic surface discharge phenomena on a BSO crystal or some high molecular insulating film (Polyimide, Polyethylene terephthalate and Polyvinylidene-fluoride) with the HVC (High-speed Video Camera) under the ac peak voltage of 5 kV during one cycle at the pressures of 21 to 101 kPa. From this work, it is found that the pattern obtained by the negative discharge was always a concentric circle, which is caused by the electron emission from the needle electrode. On the other hand, the pattern of positive streamer has characteristic shape that depends on the kind of insulating material. These results show that the propagation of positive streamer is influenced by photoelectric effect from insulating film.
DescriptionOriginal contains color illustrations
Meeting Information: 6th Spacecraft Enivironment Symposium (February 29-30, 2009. Kitakyushu International Conference Center)
形態: カラー図版あり
会議情報: 第6回宇宙環境シンポジウム (2009年2月29日-30日. 北九州国際会議場)
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-09-006

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