Molecular dynamics simulation of interaction between energetic electron beam with charged dust particles in a 2D dusty plasma

As shown in recent laboratory experiments by Ticos et al., manipulation of charged dust particle by a strong electron beam (EB) provided a good chance to study the interaction of energetic electrons with strongly coupled dust particles, and indeed, the novel phenomena including turbulent dust flow and inter-shell rotation were observed. However, it is unknown that whether the well-known Yukawa potential is applicable to the interaction of charged dust particles during the EB process. In this study, the molecular dynamics simulation based on the Yukawa potential is used to study kinetic effects of two-dimensional dusty plasma when the EB is present. Special attention is paid to the roles of EB energy, coupling parameter and screening parameter. The simulations are compared with the existing results of laboratory experiments.