Year: 2026
Type: conference-paper
Abstract: In this study, we analyse and compute the local growth rate of parametric decay instabilities of helicon waves under typical scrape-off layer conditions. Our findings are consistent with previous work [Porkolab et al., AIP Conference Proceedings 2984 , 070004 (2023)], confirming that the dominant decay channels are ion cyclotron quasi-modes and their harmonics. While the parametric instability can be excited at extremely low input power, it can be suppressed by a higher electron temperature. Conversely, higher plasma densities increase the local growth rate, suggesting that helicon waves may face challenges in high-density plasmas.
Source: EPJ Web of Conferences
Authors: Xiaoyu Yang, Zhe Gao
Institution: Tsinghua University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7118948169