Abstract
As one approach to understanding complex fluid phenomena, it is effective to regard a “vortex,” a fundamental element of flow, as a dynamical object with its own individuality and to investigate its motion and interactions. When a nonneutral plasma consisting of a single species of charged particles is confined in a uniform magnetic field, particle drift caused by the self-electric field makes a localized density distribution behave as a single vortex. At the BX-U linear trap at Kyoto Institute of Technology, research on the dynamics of vortices appearing in nonneutral plasmas is being conducted using this property. In this seminar, we will first outline the research methods for vortex motion using nonneutral plasmas. Next, we will introduce research on the process by which two electron plasma vortices merge. Furthermore, as an attempt to extend the study to vortex motion that includes interactions with oppositely charged particles, we will introduce the prospects for experiments on the simultaneous confinement of electron plasma and ion plasma.