等离子体
磁场
法拉第笼
感应耦合等离子体
电场
电磁线圈
计算物理学
等离子体振荡
放松(心理学)
朗缪尔探针
物理
原子物理学
化学
等离子体诊断
心理学
社会心理学
量子力学
作者
Vladimir Kolobov,Valery Godyak
标识
DOI:10.1088/1361-6595/aa7584
摘要
We discuss the peculiarities of inductively coupled plasma (ICP) at low driving frequencies. The ratio of electric to magnetic field, decreases with decreasing frequency according to Faraday's law—higher magnetic fields are required to induce the same electric field at lower frequencies. We point out that the ratio of can be non-uniform in space depending on primary coil configuration and the presence of ferromagnetic materials. In this paper, we consider examples of low-frequency ICPs with negligibly small magnetic fields in plasma. The disparity of time scales for ion transport and the electron energy relaxation results in nonlinear plasma dynamics at low frequencies. Numerical simulations demonstrate that at low frequencies, the presence of plasma has very little effect on spatial distributions of the electric and magnetic fields, which are determined solely by the coil geometry and by the presence of ferromagnetic cores. Simulations of plasma dynamics in ICP over a wide range of driving frequencies and gas pressures illustrate high-frequency, quasi-static and dynamic regimes of discharge operation and explain some trends observed in experiments.
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