Cutoff limitation of left-hand polarization wave and candidates for further enhanced producing multicharged ions on ECRIS
Cutoff limitation of left-hand polarization wave and candidates for further enhanced producing multicharged ions on ECRIS
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ECRIS 上左手偏振波的截止限制和进一步增强产生多电荷离子的候选方案
DOI：
10.1088/1742-6596/2244/1/012001
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
I. Owada and T. Maenaka
中科院分区：
文献类型：
--
作者：
Y. Kato;W. Kubo;S. Harisaki;M. Anan;K. Tsuda;K. Sato;I. Owada and T. Maenaka
基于实验获得的电子回旋共振离子源（ECRIS）等离子体参数和理论分析，指出目前认为决定ECRIS中多电荷离子流增加的主要因素不仅是寻常波和右手截止的密度极限，而且是左手截止的高密度极限。有两个响应准则，可以考虑使其有可能克服限制，除了传统的简单地增加频率和磁场强度。一种是先进的高频谐振，即上混合谐振（UHR），它是电磁波到静电波的基本无截止转换。其他的是由于引入了比ECR的频率更低的波，ECR在更本质的意义上没有密度限制。后者是低杂波共振（LHR）或离子回旋共振（ICR）的引入。我们将描述实验获得的等离子体参数，并将讨论这些候选人的应用。
Based on experimentally obtained plasma parameters in an electron cyclotron resonance (ECR) ion source (ECRIS) and theoretical considerations, it is turned out the essential factor that is currently presumed to define the increase in multicharged ion current in ECRIS is not simply the density limit of ordinary wave and right-hand cutoffs, but is also higher density one of left-hand cutoff. There are two response guidelines that can be considered to make it possible to overcome limitations, except for the conventional simply increasing the frequency and the magnetic field strength. One is advanced high-frequency resonance, ie, upper-hybrid resonance (UHR), which is conversion from electromagnetic to electrostatic wave essentially without cutoff. The others are due to the introduction of lower frequency waves than ECR's one, which has no density limit in a more essential sense. The latter is the introduction of lower-hybrid resonance (LHR) or ion cyclotron resonance (ICR). We will describe experimentally obtained plasma parameters, and will discuss these candidate applications.