Spectrum line width of SBS in collisionless plasma with two species of ions

Abstract

A problem of scattered radiation spectrum linewidth of stimulated Brillouin scattering (SBS) in multi-species plasma is studied. It is shown that the threshold and spectral composition of SBS can be varied by changing the concentration of species of the plasma. A possibility of existence of the scattered radiation spectrum with the frequency line width comparable to the ion-acoustic frequency is revealed.