Stimulated Brillouin scattering of electromagnetic waves in a dusty plasma

Abstract

The stimulated scattering of electromagnetic waves off low‐frequency modes in a homogeneous, unmagnetized, and collisionless dusty plasma has been investigated theoretically. The presence of the dust particles introduces a background inhomogeneous electric field that significantly influences the dispersive properties of the plasma. The usual Brillouin scattering at the ion‐acoustic branch is found to be slightly modified by the charged dust grains. However, significant scattering is also found to occur at a frequency lower than the ion‐acoustic frequency, off a new mode of the plasma arising from the oscillations of the ions in the static structure of the dust distribution.