title: [Analysis of streamer properties and emission spectroscopy of 2-D OH distribution of pulsed corona discharge].
abstract: Streamer plays a key role in the process of OH radical generation. The propagation of primary and secondary streamers of positive wire-plate pulsed corona discharge was observed using a short gate ICCD in air environment. The influence of the applied voltage on the properties was investigated. It was shown that the primary streamer propagation velocity, electric coverage and length of secondary streamer increased significantly with increasing the applied voltage. Then 2-D OH distribution was investigated by the emission spectrum. With the analysis of the OH emission spectra, the distribution of OH radicals showed a trend of decreasing from the wire electrode to its circumambience. Compared with the streamer propagation trace, the authors found that OH radical distribution and streamer are in the same area. Both OH radical concentration and the intensity of streamer decreased when far away from the wire electrode.
authors.affiliation: The State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China. bryanzl@zju.edu.cn
authors.forename: Lei
authors.initials: L
authors.lastname: Zhao
authors.forename: Xiang
authors.initials: X
authors.lastname: Gao
authors.forename: Zhong-Yang
authors.initials: ZY
authors.lastname: Luo
authors.forename: Jian-Yong
authors.initials: JY
authors.lastname: Xuan
authors.forename: Jian-Ping
authors.initials: JP
authors.lastname: Jiang
authors.forename: Ke-Fa
authors.initials: KF
authors.lastname: Cen