螺旋
等离子体
模式(计算机接口)
原子物理学
共振(粒子物理)
天线(收音机)
物理
计算物理学
电信
计算机科学
核物理学
操作系统
作者
Mingyang Wu,Chijie Xiao,Xiaogang Wang,Yue Liu,M. Xu,Chang Tan,Tianchao Xu,Xiuming Yu,Renchuan He,Andong Xu
出处
期刊:Plasma Science & Technology
[IOP Publishing]
日期:2022-05-01
卷期号:24 (5): 055002-055002
被引量:2
标识
DOI:10.1088/2058-6272/ac567d
摘要
Abstract Helicon wave plasma sources have the well-known advantages of high efficiency and high plasma density, with broad applications in many areas. The crucial mechanism lies with mode transitions, which has been an outstanding issue for years. We have built a fluid simulation model and further developed the Peking University Helicon Discharge code. The mode transitions, also known as density jumps, of a single-loop antenna discharge are reproduced in simulations for the first time. It is found that large-amplitude standing helicon waves (SHWs) are responsible for the mode transitions, similar to those of a resonant cavity for laser generation. This paper intends to give a complete and quantitative SHW resonance theory to explain the relationship of the mode transitions and the SHWs. The SHW resonance theory reasonably explains several key questions in helicon plasmas, such as mode transition and efficient power absorption, and helps to improve future plasma generation methods.
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