Strong Landau Damping of Electron Plasma Waves and Vortical Analysis of the Formed Electron Holes

In this study, the vortical nature of electron phase-space holes formed due to nonlinear Landau damping of electron plasma waves is explored and established using the recently developed fluid-analogue model of particle phase-space. Kinetic Vlasov simulation is performed and the phase-space of the system is analysed. Velocity and vorticity fields of the electron phase-space are traced and rotational flow of the phase-space element is observed. The phase-space vortex identification parameter \(\mathcal {L}\) is used to locate regions with vortical flow in the electron phase-space. This study describes the applicability of the phase-space fluid model to the study of electron phase-space holes formed due to strong Landau damping phenomena.