Striations in helicon-type argon plasma

Wanying Zhu, Ruilin Cui, Feng He, Yueqing Wang, Jiting Ouyang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

In this paper, two types of stationary striations appearing in an argon helicon plasma source are presented. The formation and features of the striations were investigated experimentally under different conditions, including RF power, gas pressure, and external magnetic field. The results show that the striation spacing decreases as the gas pressure increases but does not change significantly along with the magnetic field and the RF power. It is suggested that these striations are strongly related to the non-local effect of electron kinetics in the plasma channel with a weak electric field. The different pressures in downstream and antenna regions will lead to different types of striations in an argon helicon plasma source.

Original languageEnglish
Article number113502
JournalPhysics of Plasmas
Volume28
Issue number11
DOIs
Publication statusPublished - 1 Nov 2021

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