JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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Other TitleExperimental study on electron-beam-induced discharges on solar arrays for space use
Author(jpn)藤井 治久; 宮本 英明; 小圷 秀明
Author(eng)Fujii, Haruhisa; Miyamoto, Hideaki; Koakutsu, Hideaki
Author Affiliation(jpn)奈良工業高等専門学校; 奈良工業高等専門学校; 三菱電機
Author Affiliation(eng)Nara National College of Technology; Nara National College of Technology; Mitsubishi Electric Corporation
Issue Date2005-06
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
Publication title第24回宇宙エネルギーシンポジウム 平成16年度
The Twenty-fourth Space Energy Symposium March 7, 2005
Start page82
End page86
Publication date2005-06
AbstractElectron-beam irradiation experiments concerning the arcing discharges on solar arrays were carried out. It is very important to make this discharge mechanism clear and offer a guideline for designing the solar arrays of high reliability. We used a pair of real GaAs solar cells on a substrate as a sample. The sample was biased to -9 kV and the electron beam of the energy of 10 keV was irradiated to the sample. Under that condition, the voltage from DC battery was applied to the gap between the cells. However, the detrimental arcing did not occur even under several conditions of the cell gap distance and the cell gap voltage below 120 V, although a few hundreds of ESD took place. Therefore, the high voltage use of solar arrays is thought not to cause sustained arcing discharge to destroy the satellite system if the arrays are designed to lower the maximum voltage between cell strings with a reasonable distance.
Keywordsspacecraft charging; solar array; electron beam irradiation; electric discharge; high voltage; transient current; field emission; 宇宙機帯電; 太陽電池アレイ; 電子ビーム照射; 放電; 高電圧; 過渡電流; 電界放出
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会

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