Some features of wavefront reversal under conditions of stimulated Brillouin scattering in a plasma

The plasma parameters required for wavefront reversal under conditions of stimulated Brillouin scattering (STBS) of CO₂ laser radiation are determined theoretically. It is shown that absorption of signal radiation and attenuation of ion-sound have a strong influence on the STBS efficiency and severely limit the range of plasma and radiation parameters in which this scattering is efficient.