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Planar Laser-Induced Fluorescence Diagnostics for Spatiotemporal OH Evolution in Pulsed Corona Discharge

Zheng, Chenghang; Shen, Xu; Gao, Xiang; Li, Zhongshan LU ; Zhu, Xinbo; Luo, Zhongyan and Cen, Kefa (2013) In IEEE Transactions on Plasma Science 41(3). p.485-493
Abstract
OH radicals play an important role in pollutant removal in nonthermal plasmas. It is crucial to clarify the behavior of OH radicals in this process. A time-resolved 2-D OH radial distribution was investigated in a pulsed corona discharge by planar laser-induced fluorescence at atmospheric pressure and room temperature. The OH evolutions under different gas components were studied, and the evolution process was simulated. The OH decay processes were found to be divided into two periods: a fast decay period and a slow decay period. The O, N, and HO2 are dominant radicals for OH generation and decay. The OH radicals are mainly generated near a nozzle electrode. The concentration variations of O-2, NO, and H2O in the background gas led to... (More)
OH radicals play an important role in pollutant removal in nonthermal plasmas. It is crucial to clarify the behavior of OH radicals in this process. A time-resolved 2-D OH radial distribution was investigated in a pulsed corona discharge by planar laser-induced fluorescence at atmospheric pressure and room temperature. The OH evolutions under different gas components were studied, and the evolution process was simulated. The OH decay processes were found to be divided into two periods: a fast decay period and a slow decay period. The O, N, and HO2 are dominant radicals for OH generation and decay. The OH radicals are mainly generated near a nozzle electrode. The concentration variations of O-2, NO, and H2O in the background gas led to different OH density evolutions. The OH distribution zones were different as gas components varied. Themaximum area of OH radical distribution after discharge decreased by 20% as O-2 increased from 5% to 8%, and it decreased by 69% as NO (150 ppm) was added into the background gas. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Evolution, OH, planar laser-induced fluorescence (PLIF), pulsed corona, discharge
in
IEEE Transactions on Plasma Science
volume
41
issue
3
pages
485 - 493
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000316205200011
  • scopus:84874823719
ISSN
0093-3813
DOI
10.1109/TPS.2013.2243919
language
English
LU publication?
yes
id
d4ab4505-eb2c-43a8-97e5-0449e8783090 (old id 3765187)
date added to LUP
2013-05-20 09:08:38
date last changed
2019-02-20 06:59:01
@article{d4ab4505-eb2c-43a8-97e5-0449e8783090,
  abstract     = {OH radicals play an important role in pollutant removal in nonthermal plasmas. It is crucial to clarify the behavior of OH radicals in this process. A time-resolved 2-D OH radial distribution was investigated in a pulsed corona discharge by planar laser-induced fluorescence at atmospheric pressure and room temperature. The OH evolutions under different gas components were studied, and the evolution process was simulated. The OH decay processes were found to be divided into two periods: a fast decay period and a slow decay period. The O, N, and HO2 are dominant radicals for OH generation and decay. The OH radicals are mainly generated near a nozzle electrode. The concentration variations of O-2, NO, and H2O in the background gas led to different OH density evolutions. The OH distribution zones were different as gas components varied. Themaximum area of OH radical distribution after discharge decreased by 20% as O-2 increased from 5% to 8%, and it decreased by 69% as NO (150 ppm) was added into the background gas.},
  author       = {Zheng, Chenghang and Shen, Xu and Gao, Xiang and Li, Zhongshan and Zhu, Xinbo and Luo, Zhongyan and Cen, Kefa},
  issn         = {0093-3813},
  keyword      = {Evolution,OH,planar laser-induced fluorescence (PLIF),pulsed corona,discharge},
  language     = {eng},
  number       = {3},
  pages        = {485--493},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Plasma Science},
  title        = {Planar Laser-Induced Fluorescence Diagnostics for Spatiotemporal OH Evolution in Pulsed Corona Discharge},
  url          = {http://dx.doi.org/10.1109/TPS.2013.2243919},
  volume       = {41},
  year         = {2013},
}