涟漪
离子
环面
原子物理学
托卡马克
环形场
材料科学
物理
垂直的
俘获
等离子体
光学
核物理学
几何学
生物
量子力学
电压
数学
生态学
作者
K. Tani,M. Azumi,Hiroshi Kishimoto,Shinichi Tamura
摘要
Computational studies have been performed for fast ion behavior in a Tokamak with toroidal field ripple. Collisionless behavior of fast ions relating to rippletrapping, ripple-detrapping and banana drift is of essential importance in fast ion loss processes in case of quasi-perpendicular neutral beam injection. The collisionless ripple trapping and ripple-enhanced banana drift produce a large number of loss bands in velocity space and enhance the loss of fast ions. The fast ion loss associated with ripple can be categorized into two groups; ripple-trapped loss and banana-drift loss. The amount of loss particles due to the respective loss process is significantly influenced by the effect of finite banana size of fast ions. The ripple-trapped loss particles are localized in a specific region on the first wall surface.
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