Capacitively coupled glow discharges at frequencies above 13.56 MHz
作者:
M. Surendra,
D. B. Graves,
期刊:
Applied Physics Letters
(AIP Available online 1991)
卷期:
Volume 59,
issue 17
页码: 2091-2093
ISSN:0003-6951
年代: 1991
DOI:10.1063/1.106112
出版商: AIP
数据来源: AIP
摘要:
Particle‐in‐cell/Monte Carlo simulations of glow discharges between parallel plate electrodes indicate that operation at frequencies above 13.56 MHz offers a number of attractive features for plasma processing applications. Plasma density and ion current scale approximately as the square of frequency, but maximum ion energy is unaffected to first order when applied voltage, pressure and electrode spacing remain constant. In addition, raising frequency decreases sheath thickness, thereby increasing ion directionality in the sheath at constant pressure. By manipulating both frequency and rf voltage, it is possible to control ion current and energy independently.
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