点击次数：

发布时间：2019-03-11

论文类型：期刊论文

发表时间：2014-11-01

发表刊物：CHINESE PHYSICS B

收录刊物：Scopus、ISTIC、EI、SCIE

卷号：23

期号：11

ISSN号：1674-1056

关键字：inductively coupled plasmas; radio-frequency bias; Langmuir probe; fluid model

摘要：The inflexion point of electron density and effective electron temperature curves versus radio-frequency (RF) bias voltage is observed in the H mode of inductively coupled plasmas (ICPs). The electron energy probability function (EEPF) evolves first from a Maxwellian to a Druyvesteyn-like distribution, and then to a Maxwellian distribution again as the RF bias voltage increases. This can be explained by the interaction of two distinct bias-induced mechanisms, that is: bias-induced electron heating and bias-induced ion acceleration loss and the decrease of the effective discharge volume due to the sheath expansion. Furthermore, the trend of electron density is verified by a fluid model combined with a sheath module.