The 2D distributions of the fast electrons with relativistic factor in z-y space (left) and phase space at , and . A and B mark the “good” fast electrons contributing to SP radiation.
The self-generated transverse electric field (a), and magnetic field (b) on the surface at .
The electric field component of the emitted radiation at (a) , (b) , and (c) .
Time dependent electric field component (a) and the corresponding spectrum (b) observed at position .
(a) Radiated energy spectrum based on Eq. (8) as a function of the emission angles and (b) Fourier spectrum of radiated field obtained from 2D PIC simulations at for case . Here, , and .
Radiated energy spectrum based on Eq. (8) for different laser intensity.
The distribution of the emission electric field (a) and the corresponding Fourier spectrum (b) obtained from 2D PIC simulations at 200 for case . (c) and (d) are for case .
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