Science and Education Publishing American Journal of Numerical Analysis 2372-2126 4 1 2016 4 14 Dynamics of Kinks by Using Adomian Decomposition Method 8 10 EN Arash Ghahraman Department of Physics, Faculty of Basic Science, Chabahar Maritime University, Chabahar, Iran AJNA2016412 10.12691/ajna-4-1-2 2015 11 14 2016 3 18 2016 4 12 This paper studies nonlinear waves in the presence of weak external perturbation. Dynamical behavior of kink is examined. Adomian decomposition method is employed to study the kink-impurity interaction. As a result, an analytical approximate solution is derived. Then some of the first terms of the series solution are considered to show the kink behavior in the presence of impurity.