Figure 8
From: Effect of radiation-reaction on charged particle dynamics in a focused electromagnetic wave

Represent the trajectory of the particle in the absence/presence of radiation reaction effects. The chosen initial conditions and the laser parameters are same as in Fig. 7. The red curve represent the motion of the particle in the absence of radiation reaction (values correspond to y-axis on the left). The blue and magenta curve respectively represent the trajectory of the particle in the presence of radiation reaction effects (values correspond to y-axis on the right)as obtained by solving the Hartemann-Luhmann and the Landau-Lifshitz equation of motion. Note that the apparent discrepancy in the initial conditions seen in the above figure for without and with radiation reaction is due to the use of different axes i.e. left y-axis is for without radiation reaction and right y-axis is for with radiation reaction effects.