摘要
Evolution of the charged grains in a two-dimensional dusty plasma under a spatially harmonic external force,in particular,their long-time behaviors after the force has been withdrawn,is studied by using molecular dynamics simulation.Under an external force and a grain–grain interaction force,initially homogeneously distributed grains can reach a quasistationary state in the form of a disk crystal.After the external force is withdrawn,the disk moves initially with its size and shape nearly unchanged until it rapidly stops moving,and eventually the disk grain rotates like a vortex.The time needed to reach the final state increases with the strength of the initial external force increasing.
作者
管苗
陈志东
李梦蝶
刘忠茂
汪友梅
郁明阳
Miao Guan;Zhi-Dong Chen;Meng-Die Li;Zhong-Mao Liu;You-Mei Wang;Ming-Yang Yu(Department of Physics,School of Science,Hangzhou Dianzi University,Hangzhou 310016,China;College of Engineering Physics,CAMDT,Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology,Shenzhen Technology University,Shenzhen 518118,China;Institute for Fusion Theory and Simulation,Zhejiang University,Hangzhou 310007,China;Theoretical Physics I,Ruhr University,Bochum D-44780,Germany)
基金
supported by the National Natural Science Foundation of China(Grant Nos.11975088 and 11705041)
the Natural Science Foundation of Zhejiang Province,China(Grant No.LY15A050001)。
