托卡马克等离子体约束研究中一个重要的参数便是离子和电子非麦氏的速度分布函数,这种非麦氏的分布通常是由于粒子的损失和外部的辅助加热导致的,必须通过求解动力学方程获得。程序包FPPAC[1]可用于描述多份量等离子体中粒子的动力学过程。坐标系为球面坐标系(ν为速度,θ为速度与磁场的夹角,φ为环向方位角),其中由于环形系统的环向对称性, An important parameter in the study of tokamak plasma confinement is the velocity distribution function of ions and electron non-wheat’s. This distribution of non-wheat’s is usually caused by particle loss and external auxiliary heating. Learning equation obtained. The package FPPAC [1] can be used to describe the kinetics of particles in multiple-shot plasma. The coordinate system is the spherical coordinate system (ν is the velocity, θ is the angle between the velocity and the magnetic field, and φ is the azimuth of the azimuth). Due to the circular symmetry of the ring system,