Dielectric Barrier Discharge in Atmospheric Helium under Different Background Air Pressure
The Penning ionization in atmospheric helium Dielectric Barrier Discharges (DBD) with air impurity was investigated. Discharge inception voltage and emission spectra were measured under Background Air Pressures (BAP) from 0.8Pa to 1000Pa. Results show that in a range of BAP from 0.8Pa to 190Pa, discharge inception voltage decrease obviously and the intensity of the 391.4nm line increase with the BAP. When BAP exceeds 190Pa, discharge inception voltage increases linearly obviously, and intensity of the 391.4nm line gradually drops to lower value with the BAP, even about a zero value at last. Emission spectra of helium decrease with the BAP. Physical processes analysis indicates both discharge inception voltage and emission spectra illustrate that Penning ionization due to helium metastables and N2 varies with the BAP.
Dielectric barrier discharge Penning ionization Discharge inception voltage Spectra
Lin YANG Yanpeng HAO Xiaolei WANG Dong DAI
School of Electric Power, South China University of Technology, Guangzhou, 510640, CHINA
国际会议
哈尔滨
英文
651-654
2009-07-19（万方平台首次上网日期，不代表论文的发表时间）