典型文献
Numerical study on peak current in pulse-modulated radio-frequency discharges with atmospheric helium-oxygen admixtures
文献摘要：
Atmospheric pressure pulse-modulated radio-frequency(rf)plasmas have drawn growing attention due to their potential in applications.By selecting appropriate modulation parameters,the diffused and large-volume plasma can be generated in the pulse-modulated rf plasma with plenty of reactive oxygen species,which is essential for the biomedical application of helium-oxygen plasmas.In this paper,by means of a fluid model,the formation of the peak current in the first period(PCFP)in a pulse-modulated rf helium-oxygen discharge driven by a sinusoidal voltage is discussed,the existence of a reverse field near the anode caused by the negative and positive charges contributes greatly to the mechanism of PCFP.In the simulation,as oxygen admixture increases,the negative ions of O-and O2- become dominative anions in the sheath region,which can't be driven to the anode very quickly to build a reverse field,thus the PCFP eventually disappears.This study can effectively enhance the understanding of different transportation behavior of heavy negative ions and electrons,and further optimize pulse-modulated rf discharges with helium-oxygen mixtures in various applications.
文献关键词：
中图分类号：
作者姓名：
Xucheng WANG;Shuhan GAO;Yuantao ZHANG
作者机构：
School of Electrical Engineering,Shandong University,Jinan 250061,People's Republic of China
文献出处：
引用格式：
[1]Xucheng WANG;Shuhan GAO;Yuantao ZHANG-.Numerical study on peak current in pulse-modulated radio-frequency discharges with atmospheric helium-oxygen admixtures)[J].等离子体科学和技术（英文版）,2022(08):77-83
A类：
PCFP
B类：
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AB值：
0.529522
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