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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 《Plasma Science and Technology》学术期刊编委
性别：男
毕业院校：大连工学院
学位：硕士
所在单位：物理学院
学科：等离子体物理
办公地点：主楼东侧楼（物理系楼）304室
联系方式：0411-84707981
电子邮箱：wangdez@dlut.edu.cn
Plasma density enhancement in atmospheric-pressure dielectric-barrier discharges by high-voltage nanosecond pulse in the pulse-on period: a PIC simulation
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论文类型：期刊论文
发表时间：2010-02-03
发表刊物：JOURNAL OF PHYSICS D-APPLIED PHYSICS
收录刊物：SCIE、EI
卷号：43
期号：4
ISSN号：0022-3727
摘要：A particle-in-cell (PIC) plus Monte Carlo collision simulation is employed to investigate how a sustainable atmospheric pressure single dielectric-barrier discharge responds to a high-voltage nanosecond pulse (HVNP) further applied to the metal electrode. The results show that the HVNP can significantly increase the plasma density in the pulse-on period. The ion-induced secondary electrons can give rise to avalanche ionization in the positive sheath, which widens the discharge region and enhances the plasma density drastically. However, the plasma density stops increasing as the applied pulse lasts over certain time; therefore, lengthening the pulse duration alone cannot improve the discharge efficiency further. Physical reasons for these phenomena are then discussed.