Striations in helicon-type argon plasma

被引：4

作者：

Zhu, Wanying ^{[1
]}

Cui, Ruilin ^{[1
]}

He, Feng ^{[1
]}

Wang, Yueqing ^{[1
]}

Ouyang, Jiting ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China

来源：

PHYSICS OF PLASMAS | 2021年 / 28卷 / 11期

基金：

中国国家自然科学基金;

关键词：

INDUCTIVELY-COUPLED PLASMA; NONLOCAL ELECTRON KINETICS; PAIRED LUMINOUS RINGS; MODE TRANSITIONS; GLOW-DISCHARGES; ATOMS;

D O I：

10.1063/5.0065771

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

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.

引用

页数：9

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