中文摘要：

基于准一维异核两组分玻色-爱因斯坦凝聚体的Gross-Pitaevskii方程模型，在调制不稳定条件下，通过调节相互作用强度参数，研究了亮-亮孤子解的产生及其碰撞问题。若不存在外部势阱，相对相位是π的情况下亮-亮孤子产生了完全弹性碰撞，相对相位是”π／2时亮-亮孤子碰撞产生了能量的转移；若存在外部势阱，相对相位为”时亮-亮孤子产生了周期性碰撞，而相对相位是”π／2时两孤子碰撞合并成一个孤子，并伴随有能量逃逸。

英文摘要：

We studied the production of the bright-bright soliton solutions and their collision by adjusting the strength of the interaction parameters, under the condition of modulational instability, based on Gross- Pitaevskii equation of the quasi-one-dimensional heteronuclear two-component Bose-Einstein condensates. If there is no external potential well, bright-bright solitons lead to elastic collision with the relative phase π, but their collision always accompany by energy transfer from one to another for the relative phase π/2. If there is external potential well, the relative phase π can lead to periodic collisions of the bright-bright solitons, but they combine to one soliton after collision with energy escape for the relative phase π∕2.