Schroeder C B, Esarey E, Shadwick B A
Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Nov;72(5 Pt 2):055401. doi: 10.1103/PhysRevE.72.055401. Epub 2005 Nov 22.
A warm, relativistic fluid theory of a nonequilibrium, collisionless plasma is developed to analyze nonlinear plasma waves excited by intense drive beams. The maximum amplitude and wavelength are calculated for nonrelativistic plasma temperatures and arbitrary plasma wave phase velocities. The maximum amplitude is shown to increase in the presence of a laser field. These results set a limit to the achievable gradient in plasma-based accelerators.
为了分析由强驱动束激发的非线性等离子体波,我们发展了一种非平衡、无碰撞等离子体的热相对论流体理论。针对非相对论性等离子体温度和任意等离子体波相速度,计算了最大振幅和波长。结果表明,在存在激光场的情况下,最大振幅会增加。这些结果为基于等离子体的加速器中可实现的梯度设定了一个限制。