To the Modulation Instability on the Nonlinear Stage of Warm Electron Beam Relaxation in the Electrons-Ions Plasma

The paper contain results of the numerical experiments on classical SIEB (Steadily Injected Electron Beam) problem with the mobile ions with the real mass ratio in the frame of full system of the nonlinear kinetic Vlasov-Poisson equations. Two cases of T_e=T_i и T_e » T_i are studying. The paper opening series of publications deal with the detail description of basic results of the numerical experiments on the SIEB problem with the mobile ions.