论文标题
激发血浆韦克菲尔德的激发
Excitation of plasma wakefields by intense ultra-relativistic proton beam
论文作者
论文摘要
我们在这里报告了通过强烈的超质质子束激发的非线性电子等离子体波的精确分析波动解决方案。它带出了在驱动梁后面形成的激发唤醒波的纵向电场特征的基本物理。结果在2D几何形状中的细胞（PIC）代码Osiris中得到了完全相对论的粒子的进一步补充。模拟中的血浆和梁参数是按照实验工作的一致性选择的，它为我们提供了预期的轴向和横向电场剖面。通过提供非相关等离子体离子动力学的小质子束的分析描述，进一步扩展了调查。我们的结果表明，随着质子束数量的增加，唤醒场的幅度不会无限期地增长。相反，它饱和到明确的极限。
We report here an exact analytical travelling wave solution for nonlinear electron plasma wave excited by an intense ultra-relativistic proton beam. It brings out the underlying physics of longitudinal electric field characteristics of the excited wake wave formed behind the drive beam. The results are further supplemented by a fully relativistic particle in cell (PIC) code OSIRIS in 2D geometry. The plasma and beam parameters in the simulation are chosen in conformity with experimental work and it provides us the anticipated axial and transverse electric field profiles. The investigation is further extended by providing an analytical description of the wake wave excited by equi-spaced train of small proton bunches with the inclusion of the non-relativistic plasma ion dynamics. Our results show that the amplitude of the wake field does not grow indefinitely with the increase in the number of proton bunches. On the contrary, it saturates to a definitive limit.
