Radiation damping effects in ultra-intense laser-plasma interaction

Using the reference frame transformation, radiation damping effects in ultra-intense laser-plasma interaction are analyzed based on the motion equation of a radiation electron. The results show that, in both cases of the circularly and the linearly polarized lasers, the radiation damping effects are enhanced with the plasma density increasing. In the circularly polarization case, if the laser intensity is at the order of 1023-1026 W/cm2, corresponding to different plasma densities, the radiation damping effects may influence the motion of electron significantly, while in the linearly polarization case, only when the laser intensity is much higher than the critical intensity, the radiation damping effects can obviously affect the motion of electron.