摘要
应用Monte Carlo方法 ,模拟了Tokamak装置中的中性粒子的输运过程 ,模型考虑了中性粒子在等离子体中的电荷交换、电子碰撞电离、离子碰撞电离等离化过程 .以HT 7Tokamak为例 ,计算了在注入超声速中性氢粒子时所产生的氢原子密度空间分布 .模拟结果表明 :随着注入中性粒子束初始能量的增加 ,中性粒子束在等离子体中的渗透距离相应增大 ;而中性粒子在Tokamak中的密度随着注入通量的增加也相应增加 .模拟计算所得的氢原子密度空间分布与经典估计方法的结果在Tokamak中等离子体的边界处较一致 .
The transport process of neutral beam ions in HT-7 Tokamak was simulated by Monte-Carlo method. The neutral-plasma collision processes taken into account,which include the charge-exchange,electron impact ionization, ion impact ionization,etc. The density distribution of neutral beam ions has been obtained. The simu- lated results show that neutral particles penetrate deeper with higher injection energy of neutral particles,and the neutral atom density in Tokamak increases with the increase of injection flux of neutral particles. The density distribution of neutral atom is almost in agreement with the theoretical estimation at the plasma edge.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第11期65-68,共4页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目 (10 0 75 0 4 8)
