Upper hybrid resonance heating experiments by X-mode microwaves on electron cyclotron resonance ion source.
Upper hybrid resonance heating experiments by X-mode microwaves on electron cyclotron resonance ion source.
复制标题
电子回旋共振离子源上X型微波的上部混合共振加热实验。
DOI：
10.1063/1.5127315
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
S. Harisaki
中科院分区：
文献类型：
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作者：
Y. Kato;T. Nishiokada;K. Hamada;K. Onishi;T. Takeda;K. Okumura;Takayuki Omori;W. Kubo;Masaki Ishihara;S. Harisaki
考虑了电磁波和静电波在电子回旋共振（ECR）离子源（ECRIS）等离子体中传播的可及性条件，并在实验上研究了它们与多电荷离子产生的对应关系。已经阐明，存在用于产生多电荷离子束的ECR区的有效配置，并且已经提出新的共振，即，上混合共振（UHR），必须发生。我们一直在尝试用4-6 GHz X模式微波对2.45 GHz ECRIS等离子体进行先进的实验，并且我们已经成功地通过发射这些波段的X模式微波来增强多电荷离子的产生。此外，在同一时间，我们已经观察到急剧增加的电子能量分布函数的ECRIS等离子体的探针方法。得出结论，UHR必须发生时，应用多路复用微波与他们的频率远离这些频率的ECR在ECRIS。在本文中，我们将简要描述这些新实验的理论背景和结果。
We have considered the accessibility condition of electromagnetic and electrostatic waves propagating in an electron cyclotron resonance (ECR) ion source (ECRIS) plasma and then investigated experimentally their correspondence relationships with production of multicharged ions. It has been clarified that there exists an efficient configuration of ECR zones for producing multicharged ion beams and has been suggested that a new resonance, i.e., upper hybrid resonance (UHR), must have occurred. We have been trying to perform advanced experiments with 4-6 GHz X-mode microwaves to the 2.45 GHz ECRIS plasma, and we have succeeded in enhancing the production of multicharged ions by launching X-mode microwaves of these bands. Furthermore, at the same time, we have observed sharp increases in electron energy distribution functions in the ECRIS plasma by means of probe methods. It has been concluded that the UHRs must have occurred when applying multiplex microwaves with their frequencies away from those frequencies for ECR in the ECRIS. In this paper, we will describe in brief the theoretical background and the results of these new experiments.