The simulation and analysis of neutron signals of plasmas heated by neutral beam injection (NBI) requires fast computer codes for evaluating non-thermal velocity distributions. In such calculations effects of sawtooth activity are usually neglected. In this comment, the consequences of such an approximation are discussed. The time-dependent bounce-averaged Fokker - Planck equation is solved numerically. The solution is used to calculate the effect of sawtooth activity on the time evolution of the fusion reactivity.
中性束注入（NBI）加热等离子体的中子信号模拟与分析需要快速计算机代码来评估非热速度分布。在此类计算中，锯齿波活动的影响通常被忽略。在本评论中，讨论了这种近似所带来的后果。求解了含时弹跳平均福克-普朗克方程。该解被用于计算锯齿波活动对聚变反应率时间演化的影响。