色散和耗散对Alfven孤立波的影响

THE INFLUENCE OF DISPERSIVE AND DISSIPATIVE EFFECTS ON THE FORMATION OF ALFVEN SOLITON WAVES

利用变数变换和解析积分的方法，分别找到了带色散项的ＤＮＬＳ方程和带耗散的ＭＫｄＶ方程的一类解析解，给出了存在孤立波的条件．

Using some variable transformations and analytical integration, the analytical solitary wave solutions are obtained for the dispdrive DNLS equation and dissipative MKdV equation, which describe the propagation of Alfven waves in various plasma medium. Meanwhile, the ekistence conditions of soliton-like solutions are given.