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arXiv physics/0203042physics.plasm-ph
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具有深射频电场穿透的反常电容鞘

Anomalous Capacitive Sheath with Deep Radio Frequency Electric Field Penetration

Igor D. Kaganovich

摘要:

描述了一种新的非线性效应,即外加射频电场对等离子体的深度穿透。自洽动力学处理揭示了鞘层和等离子体之间的过渡区。由于鞘层中的电子速度调制,在与鞘层相适应的过渡区中形成高能电子密度的聚束。该区域的宽度为$V_{T}/ω$量级,其中V_{T}是电子热速度,$ω$是电场的频率。与忽略过渡区的情况相比,过渡区中电场的存在导致高能电子的冷却和冷电子的额外加热。

英文摘要:

A novel nonlinear effect of anomalously deep penetration of an external radio frequency electric field into a plasma is discribed. A self-consistent kinetic treatment reveals a transition region between the sheath and the plasma. Because of the electron velocity modulation in the sheath, bunches in the energetic electron density are formed in the transition region adjusted to the sheath. The width of the region is of order $V_{T}/ω$, where V_{T} is the electron thermal velocity, and $ω$ is frequency of the electric field. The presence of the electric field in the transition region results in a cooling of the energetic electrons and an additional heating of the cold electrons in comparison with the case when the transition region is neglected.

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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