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Hydroxyl radical dynamics in a gliding arc discharge using high-speed PLIF imaging

Wang, Z. LU ; Stamatoglou, P. LU ; Kong, C. LU ; Gao, J. LU ; Bao, Y. LU ; Aldén, M. LU ; Ehn, A. LU and Richter, M. LU (2022) In Plasma Research Express 4(2).
Abstract

Plasma discharges can be transient and randomly distributed where a few investigations have been carried out using laser-induced fluorescence to capture snapshots of plasma-produced radicals in the near vicinity of the discharge. Radical distribution dynamics, however, are challenging to study in situ with high spatial and temporal resolution to fully capture the interactions between the discharge and the gas. We here demonstrate a planar laser-induced fluorescence method that can capture molecular distributions of ground state hydroxyl radicals in a discharge plasma and follow how the distribution develops in time with a repetition rate of 27 kHz. The technique is demonstrated by monitoring, in real-time, how the tube-like distribution... (More)

Plasma discharges can be transient and randomly distributed where a few investigations have been carried out using laser-induced fluorescence to capture snapshots of plasma-produced radicals in the near vicinity of the discharge. Radical distribution dynamics, however, are challenging to study in situ with high spatial and temporal resolution to fully capture the interactions between the discharge and the gas. We here demonstrate a planar laser-induced fluorescence method that can capture molecular distributions of ground state hydroxyl radicals in a discharge plasma and follow how the distribution develops in time with a repetition rate of 27 kHz. The technique is demonstrated by monitoring, in real-time, how the tube-like distribution of ground state OH radicals, surrounding a gliding arc plasma, is affected by flow dynamics and how it develops as the high voltage is turned off at atmospheric pressure. The method presented here is an essential tool for capturing radical-distribution dynamics in situ of chemically active environments which is the active region of the plasma induced chemistry.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
burst-mode laser system, gliding arc, high-speed imaging, OH radical, PLIF
in
Plasma Research Express
volume
4
issue
2
article number
025007
publisher
IOP Publishing
external identifiers
  • scopus:85132996084
ISSN
2516-1067
DOI
10.1088/2516-1067/ac76a4
project
Advanced Laser Diagnostics for Discharge Plasma
language
English
LU publication?
yes
id
04d9cdb0-e6f4-484d-af20-fe40cb8b891c
date added to LUP
2022-09-29 15:57:37
date last changed
2023-11-06 22:32:01
@article{04d9cdb0-e6f4-484d-af20-fe40cb8b891c,
  abstract     = {{<p>Plasma discharges can be transient and randomly distributed where a few investigations have been carried out using laser-induced fluorescence to capture snapshots of plasma-produced radicals in the near vicinity of the discharge. Radical distribution dynamics, however, are challenging to study in situ with high spatial and temporal resolution to fully capture the interactions between the discharge and the gas. We here demonstrate a planar laser-induced fluorescence method that can capture molecular distributions of ground state hydroxyl radicals in a discharge plasma and follow how the distribution develops in time with a repetition rate of 27 kHz. The technique is demonstrated by monitoring, in real-time, how the tube-like distribution of ground state OH radicals, surrounding a gliding arc plasma, is affected by flow dynamics and how it develops as the high voltage is turned off at atmospheric pressure. The method presented here is an essential tool for capturing radical-distribution dynamics in situ of chemically active environments which is the active region of the plasma induced chemistry. </p>}},
  author       = {{Wang, Z. and Stamatoglou, P. and Kong, C. and Gao, J. and Bao, Y. and Aldén, M. and Ehn, A. and Richter, M.}},
  issn         = {{2516-1067}},
  keywords     = {{burst-mode laser system; gliding arc; high-speed imaging; OH radical; PLIF}},
  language     = {{eng}},
  month        = {{06}},
  number       = {{2}},
  publisher    = {{IOP Publishing}},
  series       = {{Plasma Research Express}},
  title        = {{Hydroxyl radical dynamics in a gliding arc discharge using high-speed PLIF imaging}},
  url          = {{http://dx.doi.org/10.1088/2516-1067/ac76a4}},
  doi          = {{10.1088/2516-1067/ac76a4}},
  volume       = {{4}},
  year         = {{2022}},
}