Phys. Rev. Lett. 86, 5502–5505 (2001)Nonlocal Power Deposition in Inductively Coupled PlasmasReceived 26 February 2001; published in the issue dated 11 June 2001 Radiofrequency (rf) plasmas exhibit field penetration well beyond the classical skin depth. Two physical explanations are proposed. First, by tracing orbits of electrons through many rf cycles in a cylindrical system, it is shown that numerous ionizing electrons can reach the interior. Second, current-carrying electrons can form a long-lived torus that drifts toward the axis, causing frequently observed interference phenomena. The pressure dependence of this effect does not agree with collisionless theories of anomalous skin effect, but is consistent with the proposed mechanism. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.86.5502
DOI:
10.1103/PhysRevLett.86.5502
PACS:
52.77.-j, 52.20.Dq, 52.50.-b, 52.80.Pi
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