# On the density limit in the helicon plasma sources

@article{Kotelnikov2014OnTD,
title={On the density limit in the helicon plasma sources},
author={Igor A. Kotelnikov},
journal={arXiv: Plasma Physics},
year={2014}
}
Existence of the density limit in the helicon plasma sources is critically revisited. The low- and high-frequency regimes of a helicon plasma source operation are distinguished. In the low-frequency regime with $\omega \sqrt{\omega_{ci}\omega_{ce}}$, an appropriate limit is given by the Shamrai-Taranov criterion. Both these criteria are closely related to the phenomenon of the coalescence of the helicon wave with the Trivelpiece-Gould mode. We argue that theoretical density limits are not…
2 Citations

### Effects of Symmetry Breaking in Resonance Phenomena

• Physics
• 2018
We show that resonance phenomena can be treated as nonequilibrium phase transitions. Resonance phenomena, similar to equilibrium phase transitions, are accompanied by some kind of symmetry breaking

### Studies of the helicon plasma source with inhomogeneous magnetic field

• Physics
• 2016
The development of fusion facilities urges a search for materials resilient to plasma interaction. For simulations of plasma-material interaction a source of steady-state plasma is needed with