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Single-shot 3D imaging of hydroxyl radicals in the vicinity of a gliding arc discharge

Bao, Yupan LU ; Dorozynska, Karolina LU ; Stamatoglou, Panagiota LU ; Kong, Chengdong LU ; Hurtig, Tomas ; Pfaff, Sebastian LU ; Zetterberg, Johan LU orcid ; Richter, Mattias LU ; Kristensson, Elias LU and Ehn, Andreas LU (2021) In Plasma Sources Science and Technology 30(4).
Abstract
Chemical processing by plasma is utilized in many applications. Plasma-related studies, however, are challenging to carry out due to plasmas' transient and unpredictable behavior, excessive luminosity emission, 3D complexity and aggressive chemistry and physiochemical interactions that are easily affected by external probing. Laser-induced fluorescence is a robust technique for non-intrusive investigations of plasma-produced species. The hydroxyl radical (OH) is an interesting molecule to target, as it is easily produced by plasmas in humid air. In this letter, we present 3D distributions of ground state OH radicals in the vicinity of a glow-type gliding arc plasma. Such radical distributions, with minimal plasma emission, are captured... (More)
Chemical processing by plasma is utilized in many applications. Plasma-related studies, however, are challenging to carry out due to plasmas' transient and unpredictable behavior, excessive luminosity emission, 3D complexity and aggressive chemistry and physiochemical interactions that are easily affected by external probing. Laser-induced fluorescence is a robust technique for non-intrusive investigations of plasma-produced species. The hydroxyl radical (OH) is an interesting molecule to target, as it is easily produced by plasmas in humid air. In this letter, we present 3D distributions of ground state OH radicals in the vicinity of a glow-type gliding arc plasma. Such radical distributions, with minimal plasma emission, are captured instantaneously in one single camera acquisition by combining structured laser illumination and a lock-in based imaging analysis method called FRAME. The orientation of the plasma discharge can be reconstructed from the 3D data matrix, which can then be used to calculate 2D distributions of ground state OH radicals in a plane perpendicular to the orientation of the plasma channel. Our results indicate that OH distributions around a gliding arc are strongly affected by gas dynamics. We believe that the ability to instantaneously capture 3D transient molecular distributions in a plasma discharge, with minimal plasma emission interference, will have a strong impact on the plasma community for in-situ investigations of plasma-induced chemistry and physics. (Less)
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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Laser-induced fluorescence, Hydroxyl radical (OH), Three-dimentional molecular distribution, structured illumination, Frequency Recognition Algorithm for Multiple Exposures
in
Plasma Sources Science and Technology
volume
30
issue
4
article number
04LT04
publisher
IOP Publishing
external identifiers
  • scopus:85105071349
ISSN
0963-0252
DOI
10.1088/1361-6595/abda9c
project
Advanced Laser Diagnostics for Discharge Plasma
language
English
LU publication?
yes
id
f1e95176-430d-4c3b-9a94-b0a4d81e1654
date added to LUP
2021-02-08 19:18:32
date last changed
2024-03-05 20:57:42
@article{f1e95176-430d-4c3b-9a94-b0a4d81e1654,
  abstract     = {{Chemical processing by plasma is utilized in many applications. Plasma-related studies, however, are challenging to carry out due to plasmas' transient and unpredictable behavior, excessive luminosity emission, 3D complexity and aggressive chemistry and physiochemical interactions that are easily affected by external probing. Laser-induced fluorescence is a robust technique for non-intrusive investigations of plasma-produced species. The hydroxyl radical (OH) is an interesting molecule to target, as it is easily produced by plasmas in humid air. In this letter, we present 3D distributions of ground state OH radicals in the vicinity of a glow-type gliding arc plasma. Such radical distributions, with minimal plasma emission, are captured instantaneously in one single camera acquisition by combining structured laser illumination and a lock-in based imaging analysis method called FRAME. The orientation of the plasma discharge can be reconstructed from the 3D data matrix, which can then be used to calculate 2D distributions of ground state OH radicals in a plane perpendicular to the orientation of the plasma channel. Our results indicate that OH distributions around a gliding arc are strongly affected by gas dynamics. We believe that the ability to instantaneously capture 3D transient molecular distributions in a plasma discharge, with minimal plasma emission interference, will have a strong impact on the plasma community for in-situ investigations of plasma-induced chemistry and physics.}},
  author       = {{Bao, Yupan and Dorozynska, Karolina and Stamatoglou, Panagiota and Kong, Chengdong and Hurtig, Tomas and Pfaff, Sebastian and Zetterberg, Johan and Richter, Mattias and Kristensson, Elias and Ehn, Andreas}},
  issn         = {{0963-0252}},
  keywords     = {{Laser-induced fluorescence; Hydroxyl radical (OH); Three-dimentional molecular distribution; structured illumination; Frequency Recognition Algorithm for Multiple Exposures}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{4}},
  publisher    = {{IOP Publishing}},
  series       = {{Plasma Sources Science and Technology}},
  title        = {{Single-shot 3D imaging of hydroxyl radicals in the vicinity of a gliding arc discharge}},
  url          = {{https://lup.lub.lu.se/search/files/119486448/Bao_2021_Plasma_Sources_Sci._Technol._30_04LT04.pdf}},
  doi          = {{10.1088/1361-6595/abda9c}},
  volume       = {{30}},
  year         = {{2021}},
}