Arbitrary amplitude double layers in dusty plasma

Arbitrary amplitude double layers in a dusty plasma consisting of warm dust particles and two temperature isothermal ions are studied using Sagdeev’s pseudopotential technique. Regions of the existence of double layers are investigated both analytically and numerically. It is seen that when one considers two-temperature ions, both compressive and rarefactive solitons are found but only compressive double layers could be obtained. It is also shown that the result obtained in the small-amplitude limit conforms to the perturbation result obtained using the reduction perturbation technique.