Sheath Analysis of Conducting Channel Walls in Anode-Layer Hall Thruster with Acceleration Zone Shifted Downstream

Channel wall sheath thickness in an anode-layer Hall thruster RAIJIN66 was investigated by a two-dimensional hybrid simulation and a one-dimensional sheath model. A hybrid particle-fluid model with the quasineutrality assumption was used to obtain the wall ion flux and plasma property at plasma-sheath edge. The plasma property inside the sheath was estimated by the nonneutral sheath model. The simulated ion wall current density at the channel exit was 100 A/m2, and the estimated sheath thickness was 0.64 mm. If the wall ion current density is reduced to 1/20 of this value, the sheath region will be extended to cover 50\% of the channel width.Comment: 6 pages, 9 figure

双曲型方程式系による電子流体計算とホールスラスタ解析への応用

学位の種別: 課程博士審査委員会委員 : （主査）東京大学教授 小紫 公也, 東京大学教授 鈴木 宏二郎, 東京大学准教授 姫野 武洋, 東京大学准教授 小泉 宏之, （独）宇宙航空研究開発機構准教授 船木 一幸University of Tokyo(東京大学