Abstract： We investigate the orbit loss of alpha particles under helical magnetic perturbation in a tokamak. The results show that low-frequency and low-mode number magnetic perturbation can cause stochastic loss of alpha particles. This effect is significant for those particles close to the boundary between the transit zone and the trapped zone. The particle loss is sensitive to the phase of the magnetic perturbation, indicating the modulation of the particle loss with respect to magnetic perturbation. It is also found that the precession of the particle banana orbit can even further enhance the particle loss.
(Fusion products effects (e.g., alpha-particles, etc.), fast particle effects)
引用本文:
WU Liang-Neng;YU Guo-Yang. Effect of Magnetohydrodynamic Perturbations on the Orbit Loss
of Alpha Particles in Tokamak Plasma[J]. 中国物理快报, 2002, 19(9): 1312-1315.
WU Liang-Neng, YU Guo-Yang. Effect of Magnetohydrodynamic Perturbations on the Orbit Loss
of Alpha Particles in Tokamak Plasma. Chin. Phys. Lett., 2002, 19(9): 1312-1315.
YANG Qing-Wei;ZHOU Hang-Yu;FENG Bei-Bin;LIU Yi;PAN Yu-Dong;LI Wei;DUAN Xu-Ru;CHEN Wei;CUI Zheng-Ying;JI Xiao-Quan;DING Xuan-Tong;HL-A team. A New Criterion for Disruption Prediction on HL-2A[J]. 中国物理快报, 2006, 23(4): 891-894.
2002, Vol. 19 
