A new approach for modelling the damped Helmholtz oscillator: applications to plasma physics and electronic circuits

S A El-Tantawy,Alvaro H Salas,M R Alharthi

Figure 5. A comparison between the semi-analytical solution (36) (dashed curve) and (a) the RK4 numerical solution (dotted curve), (b) the FDM numerical solution (dotted curve), (c) the HPM numerical solution (dotted curve), (d) he semi-analytical solution (36) (solid curve). Here, the values of the physical parameters are subject to the presnt plasma model: α = 1.61 776 663, β = −0.892 012, γ = −0.1, q0 = 0 , and ${\dot{q}}_{0}=0.5$.