Radiation rebound and quantum splash in electron-laser collisions
Radiation rebound and quantum splash in electron-laser collisions
复制标题
DOI：
10.1103/physrevaccelbeams.22.093401
复制
发表时间：
2019-01
影响因子：
1.7
通讯作者：
Z. Gong;R. Hu;J. Q. Yu;Y. Shou;A. Arefiev;X. Yan
中科院分区：
文献类型：
--
作者：
Z. Gong;R. Hu;J. Q. Yu;Y. Shou;A. Arefiev;X. Yan
辐射反应（RR）预计将在极端强度的光-物质相互作用中发挥关键作用。利用理论分析和三维（3D）数值模拟，我们表明，电子反射，诱导的RR在迎面碰撞与强激光脉冲，可以提供明显的签名来区分经典和量子RR。在经典区域，有一个陡峭的阈值激光强度实现整个电子束反弹。然而，这个阈值变成了量子区域中的逐渐过渡，其中电子聚束被激光脉冲准各向同性地散射，并且这个过程类似于水飞溅。利用导出的经典辐射反冲力对激光脉冲和电子束团参数的依赖关系，提出了一种区分量子离散反冲力和经典连续RR力的实用检测方法。
The radiation reaction (RR) is expected to play a critical role in light-matter interactions at extreme intensity. Utilizing the theoretical analyses and three-dimensional (3D) numerical simulations, we demonstrate that electron reflection, induced by the RR in a head-on collision with an intense laser pulse, can provide pronounced signatures to discern the classical and quantum RR. In the classical regime, there is a precipitous threshold of laser intensity to achieve the whole electron bunch rebound. However, this threshold becomes a gradual transition in the quantum regime, where the electron bunch is quasi-isotropically scattered by the laser pulse and this process resembles a water splash. Leveraged on the derived dependence of classical radiation rebound on the parameters of laser pulses and electron bunches, a practical detecting method is proposed to distinguish the quantum discrete recoil and classical continuous RR force.