会議発表論文 火星高層大気環境シミュレーションを目的とした超熱混合分子ビーム形成の基礎研究

初田, 光嶺  ,  緒方, 雄介  ,  横田, 久美子  ,  田川, 雅人  ,  Hatsuda, Akimine  ,  Ogata, Yusuke  ,  Yokota, Kumiko  ,  Tagawa, Masahito

内容記述
The upper Martian atmosphere mainly contains carbon dioxide (CO2) and atomic oxygen (O) depending on the altitude. Spacecraft orbiting in the Martial upper atmosphere encounters high-energy collision with these molecules. In order to evaluate a risk for material erosion possibilities in Martian orbit, a method for ground-based Martian atmospheric simulation was investigated. A laser-detonation hyperthermal beam source was applied in this study and beam formation properties of hyperthermal CO2 beam was explored. A chopper wheel system was used to narrow the width of collisional velocity distribution of the formed beam. It was made clear that hyperthermal CO2 beam with collisional velocity of 6.3 km/s was successfully formed, however, it contained CO2 fragment such as C, O, and CO. This result suggested that CO2 molecules are partially decomposed in the laser-induced plasma. The hyperthermal beam thus formed was sliced by the chopper wheel system to reduce the width of the energy distribution.
会議情報: 第12回 宇宙環境シンポジウム(2015年11月16日-18日. 北九州国際会議場 国際会議室), 北九州市, 福岡県
形態: カラー図版あり
Meeting Information: 12th Spacecraft Environment Symposium (November 16-18, 2015. International Conference Room, Kitakyushu International Conference Center), Kitakyushu, Fukuoka, Japan
Physical characteristics: Original contains color illustrations
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https://repository.exst.jaxa.jp/dspace/bitstream/a-is/562158/1/AA1630004037.pdf

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