Airy vortex electron plasma wave

Abstract

A family of Airy vortex electron plasma (AiVEP) wave is introduced by constructing an unmagnetized collision-free plasma and its analytical propagation expression is obtained. The intensity, phase, potential, energy flow density, and angular momentum density of the AiVEP wave with the topological charge M = 1 and M = 2 for different decay factors are studied. We find that the intensity will undergo the process of focusing and rediverging, but this phenomenon becomes less and less obvious as the decay factor increases. The phase distribution will be more and more uniform during the propagation process. As the propagation distance and the decay factor increase, the peak of the potential becomes smaller and the fluctuation becomes gentle.