Vector potential analysis of the helicon antenna in vacuum

TL;DR

This paper analyzes the vector potential generated by a helicon antenna in vacuum through static and dynamic methods, revealing electromagnetic pulse propagation at higher frequencies and discussing potential plasma heating applications.

Contribution

It provides a detailed vector potential analysis of the helicon antenna in vacuum, including dynamic behavior at different frequencies and potential use in plasma RF injection.

Findings

Electromagnetic pulses propagate along the antenna axis at higher frequencies.

Static and dynamic vector potential calculations are performed.

Discussion on adapting the antenna for plasma heating applications.

Abstract

The helicon antenna is a well-known device in the field of electric propulsion. Here we investigate the vector potential produced in vacuum by such an antenna with typical size parameters. Both a static and a dynamic analysis are performed. The dynamic calculation is evaluated at both the usual operating frequency and one which is slightly greater. At the higher frequency, a pulse of electromagnetic energy is found to propagate along the cylindrical axis in either direction. The possible adaptation of the helicon antenna as a RF injection device for burning plasma is discussed.