带电粒子与磁化等离子体相互作用的极化效应及能量损失

 利用线性Vlasov-Poisson方程，研究了带电粒子在磁化二份量等离子体中运动时产生的动力学极化效应及能量损失，重点分析了外磁场及等离子体中离子的极化效应对入射粒子能量损失响。数值结果表明：入射粒子的能量损失有两个峰，分别位于高速区和低速区，对应于等离子体中的电子极化效应和离子极化效应。在强磁场情况下，低速粒子的能量损失主要来自离子的极化效应；而在弱磁场情况下，高速粒子的能量损失则主要来自于电子的极化效应。

Polarization effect and energy loss in interactions of charged particles with magnetized plasmas

The energy loss of charged particles moving in magnetized two-component plasmas has been studied based on the linearized Vlasov-Poisson equations, in which special attention is paid to the effects of the magnetic filed and dynamic polarization on the energy loss. The numerical results show that there are two peaks in the energy loss. One is located in the low-velocity region and corresponds to the ion’s polarizations, and the other is located in the high-velocity region and corresponds to the electron’s polarizations. In the case of the strong magnetic filed, the energy loss of the low-velocity particles is mainly caused by the ion’s polarizations; while in the case of weak magnetic filed, the energy loss of the high-velocity particles is mainly caused by the electron’s polarization．