Investigation of Vortex Structures in Gas-Discharge Nonneutral Electron Plasma: III. Pulse Ejection of Electrons at the Formation and Radial Oscillations of Vortex Structure

TL;DR

This paper experimentally studies how electrons are pulsed out from vortex structures in gas-discharge nonneutral electron plasma during formation and oscillations, analyzing mechanisms and effects on plasma dynamics.

Contribution

It provides new experimental insights into electron ejection mechanisms and their impact on plasma behavior during vortex formation and oscillations.

Findings

Electrons are ejected in pulses during vortex formation and oscillations.

The duration and periodicity of ejected pulses are linked to vortex dynamics.

Electron ejection influences the behavior of the discharge electron sheath.

Abstract

The results of experimental investigations of electron ejection from gas-discharge nonneutral electron plasma at the formation and radial oscillations of vortex structure have been presented. The electrons are injected from the vortex structure and the adjacent region of electron sheath in the form of pulses the duration and periodicity of which are determined by the processes of evolution and dynamics of this structure. The possible mechanisms of pulse ejection of electrons are considered. The influence of electron ejection on other processes in discharge electron sheath is analyzed.