Figure 1

Angle-resolved radiation energy ε _R in units of the electron rest energy m vs the emission polar angle θ and the azimuthal angle ϕ: (a) including and (b) excluding SE, in a 6-cycle focused laser pulse. Color coded is log₁₀[dε _R /dΩ] rad⁻², with the emission solid angle Ω. The laser and electron beam counterpropagate, with the initial propagation polar angles \({\theta }_{L}^{(i)}=0^\circ \) and \({\theta }_{e}^{(i)}=180^\circ \), respectively. All other parameters are given in the text.