论文标题
辐射阻尼状态下超明显激光脉冲的完全表征
Complete characterization of ultra-intense laser pulses in radiation damping regime
论文作者
论文摘要
我们报告了第一个封闭的分析表达，用于从反向传播的超强度激光脉冲中散射的电子束旋转旋转的散射角度，这也解释了辐射反应（RR）。发现的配方在非试图取决于电子束的激光强度，脉冲持续时间，束腰和能量。对于各种激光和束参数，所提出的公式与聚焦激光脉冲的现实电磁场配置中具有完整的相对论测试粒子模拟的良好定量一致性。我们还展示了在辐射统治方面如何简单地重新缩放模型的输入参数可以与基于Landau-Lifshitz模型的数值模拟产生良好的定量一致性。最后，我们讨论了如何将模型应用于当前和未来的超高功率激光系统的原位表征，以及在超强激光电子相互作用期间RR的实验探测基本特性。
We report the first closed, analytical expression for the scattering angle of an electron bunch ponderomotively scattered from a counter-propagating, ultra-intense laser pulse, also accounting for radiation reaction (RR). The found formulation depends nontrivially on the laser intensity, pulse duration, beam waist, and energy of the electron bunch. For various laser and bunch parameters the proposed formula is in excellent quantitative agreement with full, relativistic test particle simulations in a realistic electromagnetic field configuration of a focused laser pulse. We also demonstrate how in the radiation dominated regime a simple rescaling of our model's input parameters yields excellent quantitative agreement with numerical simulations based on the Landau-Lifshitz model. Finally, we discuss how the model can be applied for an in-situ characterization of current and future ultra-high power laser systems, but also to experimentally probe fundamental properties of RR during ultra-intense laser electron interaction.
