Evolution of the electron temperature (top row) and density (bottom row) profiles for two models with the initial cool state of m₂ (L= 1 Mm). Each column corresponds to an impulsive heating with the following parameters: (a) $A_{\max }=0.5\mathrm{erg}{\mathrm{cm}}^{-3}{\mathrm{s}}^{-1}$, σ_ev = 2L and s_ev = L_c + L/2 ; (b) $A_{\max }=1.0\mathrm{erg}{\mathrm{cm}}^{-3}{\mathrm{s}}^{-1}$, σ_ev = 0.1L and s_ev = L_c + L/2 ; (c) $A_{\max }=1.0\mathrm{erg}{\mathrm{cm}}^{-3}{\mathrm{s}}^{-1}$, σ_ev = 0.1L and s_ev = L_c + 0.1L. The starting time of the impulsive heating is set at t_ev= 100 s. The black vertical lines indicate the basis of the loop central part and the horizontal dotted red line shows the value log T = 5.0.