Effect of an electron beam on dust charge and ion motion a plasma*

The kinetic effects on the dust particles in a plasma crystal locally irradiated by a narrow, pulsed electron beam (EB) with energies from 10 – 15 keV [C.M. Ticoş, et. al., Plasma Phys. Control. Fusion 62, 025003 (2020)] have shown that the EB pushes the dust particles in the irradiation zone, leading to both laminar and turbulent flow. Molecular dynamic simulations of this interaction have been able to reproduce many of the observed experimental results when considering a time-averaged electron beam irradiating the dust particles.  However, simulations that include the pulsed nature of the EB do not.  To address this, we consider the impact that the modulated electron beam has on the dust charge and the dynamics of the ions using the N-body simulation code DRIAD (Dynamic Response of Ions and Dust) [L. Matthews, et. al., Phys. Plasmas 27, 023703 (2020)].  Preliminary results will be presented.