Effects of dust collisional frequencies on the damped time dependent growth rate in a four components plasma.

The features of nonlinear wave propagation in four-component collisional dusty plasma have been described by the damped nonlinear Schr ödinger equation (DNLSE). The stability and instability domains have been explored by modulational instability criteria. The physical impacts of collisional frequencies, time, and positive–negative grain density parameters on growth rate properties have been discussed using mesospheric data. It was reported that the model parameters modulated the plasma growth rate. Also, time becomes an important parameter in reducing the growth rate. [ABSTRACT FROM AUTHOR]