论文标题
由于电子光环的形成，韦克菲尔德在径向界的血浆中腐烂
Wakefield decay in a radially bounded plasma due to formation of electron halo
论文作者
论文摘要
有一种新的效果可以限制径向界面中弱的非线性尾菲尔德的寿命。如果驱动光束狭窄，则某些等离子体电子从集体运动中掉出来，并将等离子体放在径向上，并在其周围形成带负电荷的光环。这些电子在电荷分离场的作用下反复返回血浆，与血浆波相互作用并引起其阻尼。能源最低的光环电子更有效地从波中获取能量，因为它们的轨迹弯曲了血浆波向最强加速度的区域的弯曲。为了正确计算模拟中的波浪阻尼，需要将模拟窗口的宽度是等离子体的两倍。
There is a new effect that can limit the lifetime of a weakly nonlinear wakefield in a radially bounded plasma. If the drive beam is narrow, some of the plasma electrons fall out of the collective motion and leave the plasma radially, forming a negatively charged halo around it. These electrons repeatedly return to the plasma under the action of the charge separation field, interact with the plasma wave and cause its damping. The lowest-energy halo electrons take the energy from the wave more efficiently, because their trajectories are bent by the plasma wave towards the regions of the strongest acceleration. For correct accounting of the wave damping in simulations, it is necessary and sufficient to take the simulation window twice as wide as the plasma.
