[en] Investigated is the stabilization of an electron beam instability due to the process of nonlinear conversion of the Langmuir oscillations into ion-acoustic ones at scattering on plasma electrons. The scheme of an experimental installation is presented. Magnetic field of a mirror configuration has been developed by a system of coils. Field strength in the centre of the magnetic mirror amounts 2 kOe, strength in the mirrors being 8 kOe. The parameters of the electron beam are as follows: current of 10 A, energy of 40 keV, diameter of the beam in the magnetic mirror centre of 2.0 cm. Plasma injector of a hydride-titanium type has been placed in the region of the magnetic mirror. A hydrogen plasma jet with the mean concentration of (5-7)x10¹²cm^-3 has been injected. Observed is the effect of beam stabilization in a turbulent plasma of a direct discharge, in a multi-flow plasma formed at the injector operation in a periodical regime, and with the highest efficiency at the oncoming injection of two plasma bunches. It is noted that, as far as the generation of a high level of sound turbulence does not exhibit any technological difficulties, the results obtained are noteworthy for the problem on beam transport in a plasma