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Theory and simulations of radiation friction induced enhancement of laser-driven longitudinal fields

机译:辐射摩擦诱导增强激光驱动纵田的理论与仿真

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摘要

We consider the generation of a quasistatic longitudinal electric field by intense laser pulses propagating in a transparent plasma with radiation friction (RF) taken into account. For both circular and linear polarization of the driving pulse we develop a 1D analytical model of the process, which is valid in a wide range of laser and plasma parameters. We define the parameter region where RF results in an essential enhancement of the longitudinal field. The amplitude and the period of the generated longitudinal wave are estimated and optimized. Our theoretical predictions are confirmed by 1D and 2D PIC simulations. We also demonstrate numerically that RF should substantially enhance the longitudinal field generated in a plasma by a 10 PW laser such as ELI Beamlines.
机译:我们考虑通过在透明等离子体中传播的强烈激光脉冲产生Quasistatic纵向电场,其中考虑到辐射摩擦(RF)。 对于驱动脉冲的圆形和线性偏振,我们开发了该过程的1D分析模型,其在广泛的激光和等离子体参数中是有效的。 我们定义了参数区域,其中RF导致纵向领域的基本增强。 估计和优化产生的纵波的幅度和周期。 我们的理论预测由1D和2D PIC模拟确认。 我们还在数值上示出了RF应基本上通过10PW激光器如ELI束线基本上增强等离子体中产生的纵向场。

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