With the advent of high power high intensity lasers it has become possible to generate focused laser intensities where electrons interacting with the laser become highly relativistic over very short time and spatial scales. An electron quivering in the electric field radiates higher order harmonics up to very high frequencies. By focusing petawatt class lasers to very small spot sizes the amount of radiation emitted by electrons can become very large. In this regime the damping of the electron motion by the emission of this radiation can become large. Even in the relatively low intensity limit, radiation damping may play an important role. In order to study this problem a code is written to solve a set of equations describing the evolution of a strong electromagnetic wave interacting with plasma. These equations have been derived and include the effect of radiation damping up to second order. These equations are numerically integrated via an adaptive Runge-Kutta scheme. The difference in the laser pulse and plasma electron dynamics will be studied with and without damping.
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机译：随着高功率高强度激光器的出现，可以产生聚焦激光强度，其中与激光器的电子相互作用在非常短的时间和空间尺度上变得高度相对论。电场中的电子颤动辐射高达谐波的高频率。通过将Petawatt Class Lass聚焦到非常小的光斑尺寸，电子发出的辐射量会变得非常大。在这方面，通过发射这种辐射的电子运动阻尼可以变大。即使在相对较低的强度极限中，辐射阻尼也可能起到重要作用。为了研究这个问题，写入代码以解决描述与等离子体相互作用的强电磁波的演变的一组方程。这些方程已经得出并包括辐射阻尼达到二阶的效果。这些等式通过自适应跳动-Kutta方案进行数字集成。将在没有阻尼的情况下研究激光脉冲和等离子体电子动力学的差异。
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