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论文类型： 期刊论文

发表时间： 2012-09-10

发表刊物： APPLIED PHYSICS LETTERS

收录刊物： SCIE、EI、Scopus

卷号： 101

期号： 11

ISSN号： 0003-6951

摘要： The electron bounce resonance heating (BRH) in dual-frequency capacitively coupled plasmas operated in oxygen and argon has been studied by different experimental methods. In comparison with the electropositive argon discharge, the BRH in an electronegative discharge occurs at larger electrode gaps. Kinetic particle simulations reveal that in the oxygen discharge, the bulk electric field becomes quite strong and is out of phase with the sheath field. Therefore, it retards the resonant electrons when traversing the bulk, resulting in a suppressed BRH. This effect becomes more pronounced at lower high-frequency power, when the discharge mode changes from electropositive to electronegative. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4751984]