Non-uniform structure of a large-scale radio-frequency inductive discharge at a low pressure in a magnetic field

I. Yu. Zudin, S. V. Korobkov, A. V. Strikovskii, A. A. Istomin, V. V. Kochedykov, A. N. Katkov, D. S. Pleshkov, I. A. Petrova, K. N. Loskutov, M. E. Gushchin

Federal Research Center A.V. Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod

Abstract: It has been found out that a pulsed low-pressure high-frequency inductive (HF) discharge in a large volume in an external magnetic field has a non-uniform (filamented) structure. At magnetic fields of several hundred gauss, the developing discharge irregularities, the transverse scale of which is about 10 cm, are not smoothed out by diffusion and are preserved at the plasma decay stage. Such instability should be considered when designing large-scale pulsed devices with an RF discharge for various applications.

Keywords: magnetoactive plasma, RF discharge, instability.

Received: 09.12.2024
Revised: 07.02.2025
Accepted: 16.02.2025

DOI: 10.61011/PJTF.2025.11.60478.20216

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