Calculation results of Model 2: the current photon spectrum (top left), the evolution of the particle spectra (top right), the timescales (bottom left), and the evolution of the fractional energy (bottom right). See the caption in Figures 1 and 3 for details. Model 2 adopts Q_ext = Q_imp and finite values of τ_turb and γ_cut in Equation (5). The used parameters are summarized in Table 1.