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arXiv 1408.0091physics.plasm-ph
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螺旋等离子体源的密度极限

On the density limit in the helicon plasma sources

Igor A. Kotelnikov

摘要:

螺旋等离子体源的密度极限的存在是批判性的重新审视。螺旋等离子体源操作的低频和高频制度的区别。在低频区与$ω< \sqrt{ω_{ci}ω_{ce}}$的密度极限推导出从Golant-Stix标准的低杂波共振的可及性。在高频情况下,$ω> \sqrt{ω_{ci}ω_{ce}}$,由Shamrai-Taranov准则给出适当的限制。这两个标准是密切相关的现象的合并的螺旋波与Trivelpiece古尔德模式。我们认为,理论上的密度限制是没有实现在现有的设备,但可能会在未来与应用的射频功率的增加。

英文摘要:

Existence of the density limit in the helicon plasma sources is critically revisited. The low- and high-frequency regimes of a helicon plasma source operation are distinguished. In the low-frequency regime with $ω< \sqrt{ω_{ci}ω_{ce}}$ the density limit is deduced from the Golant-Stix criterion of the accessibility of the lower hybrid resonance. In the high-frequency case, $ω> \sqrt{ω_{ci}ω_{ce}}$, an appropriate limit is given by the Shamrai-Taranov criterion. Both these criteria are closely related to the phenomenon of the coalescence of the helicon wave with the Trivelpiece-Gould mode. We argue that theoretical density limits are not achieved in existing devices but might be met in the future with the increase of applied rf power.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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