Electrostatic waves in inhomogeneous dusty plasmas with grain charge fluctuation
The author derives a modified KdV equation governing the nonlinear behaviour of the system, including both charge fluctuation and dust density inhomogeneous effects. for the pure cold case, the dust-acoustic wave in tenuous or dense plasma all produce compressive solutions and their amplitudes decrease (increase) as the wave propagate in the direction of increasing (decreasing) dust number density.
scientific article; zbMATH DE number 2077292