物理学报Issue(18)：1-8,8.DOI:10.7498/aps.63.185208
同轴介质阻挡放电发生器介质层等效电容和负载特性研究
Dielectric layer equivalent capacitance and loading p erformance of a coaxial dielectric barrier discharge reactor
摘要
Abstract
Dielectric barrier discharge (DBD) can produce non-equilibrium plasma at atmospheric pressure, and it has become a hot point in recent years. For the DBD excited by pulsed or alternated currents, the effects of the loading performance of power supply, the matching between supply and discharge reactor and the discharge phenomena on its discharge are interesting issues. The studies of these issues are of great importance for understanding the DBD processes and improving the power supply efficiency. In this paper, the Lissajous figures of a DBD reactor with coaxial electrode configuration are measured. The loading performance of the DBD reactor and the dependences of excitation voltage and air flow rate on the dielectric layer equivalent capacitance are studied in atmospheric air. According to the experimental data and circuit modeling analysis, it is proved that the dielectric layer capacitance decreases with the increase of air flow rate, but increases with the increase of excitation voltage. The amplitude-frequency performance of the reactor reveals significant RLC circuit resonance. The resonance frequency of the reactor has the same behavior as its dielectric layer capacitance. Therefore it shows that the dielectric layer capacitance is the main factor for the resonance frequency evolution. A possible mechanism responsible for the dielectric layer capacitance is also presented.关键词
介质阻挡放电/负载特性/阻抗匹配/等离子体Key words
dielectric barrier discharge/loading performance/impedance matching/plasma引用本文复制引用
赵凯,牟宗信,张家良..同轴介质阻挡放电发生器介质层等效电容和负载特性研究[J].物理学报,2014,(18):1-8,8.基金项目
国家自然科学基金(批准号:21173110,11375041)资助的课题.* Project supported by the National Natural Science Foundation of China (Grant Nos.21173110,11375041) （批准号:21173110,11375041）
