Sharma S K, Boruah A, Bailung H
Physical Sciences Division, Institute of Advanced Study in Science & Technology Paschim Boragaon, Guwahati-781035, India.
Phys Rev E Stat Nonlin Soft Matter Phys. 2014 Jan;89(1):013110. doi: 10.1103/PhysRevE.89.013110. Epub 2014 Jan 31.
The collision between two counterpropagating dust acoustic solitary waves in a strongly coupled dusty plasma has been observed. The measured velocity and width of the solitary wave agree with the solution of the Korteweg-de Vries equation derived by using the generalized hydrodynamic model. The two counterpropagating solitary waves of equal amplitude merge into a single pulse with twice the individual soliton amplitude and then pass through each other. The solitons suffer a small time delay in propagation after collision. The measured delay time obtained from their trajectories is also presented.
在强耦合尘埃等离子体中观测到了两个反向传播的尘埃声孤立波之间的碰撞。测量得到的孤立波速度和宽度与使用广义流体动力学模型推导的科特韦格 - 德弗里斯方程的解相符。两个等幅的反向传播孤立波合并成一个单个脉冲，其幅度为单个孤子幅度的两倍，然后相互穿过。孤子在碰撞后传播过程中经历了小的时间延迟。还给出了从它们的轨迹获得的测量延迟时间。
