The study of nonlinear waves in plasma containing both positively and negatively charged ions
含有带正负电离子的等离子体中的非线性波研究

Zakharov-Kuznetsov(ZK) equation, modified ZK equation and coupled ZK equation are derived for magnetized plasma containing both positively and negatively charged cold ions and hot electron by using the reductive perturbation method in this paper. We obtain a solitary wave solution, and also obtain the variation of solitary wave parameters, such as amplitude, width, velocity of soliton, with the mass ratio of negative ions to positive ions, the negatively charged ion number density and the magnetic field intensity.