论文标题
离子束中和过程中静电孤立波和表面波的激发
Excitation of electrostatic solitary waves and surface waves in ion beam neutralization process
论文作者
论文摘要
在2D和3D粒子中发现了从细胞中电子发射中和离子束中和的过程中发现异常长的静电孤立波（ESW）。这些ESW之所以长，是因为被困和未捕获的电子密度扰动几乎相互补偿。在中和过程中发现了表面波，但仅在3D模拟中观察到。这是因为2D几何形状中的表面波的相速度高于3D中的表面波，从而使高能电子在电子源附近产生的高能电子足以使此类波仅在3D圆柱形束中激发。
Unusually long electrostatic solitary waves (ESWs) are discovered in 2D and 3D Particle-in-Cell studies of the process of ion beam neutralization by electron emission from filaments. These ESWs are long because trapped and untrapped electron density perturbations nearly compensate each other. Surface waves were discovered in the process of neutralization but were only observed in 3D simulations. This is because the phase velocity of surface waves in a 2D geometry is higher than in 3D giving the high-energy electrons generated upstream near the electron source enough energy to excite such waves only in 3D cylindrical beams.
