Single-shot 3D imaging of hydroxyl radicals in the vicinity of a gliding arc discharge
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/f1e95176-430d-4c3b-9a94-b0a4d81e1654
- author
- Bao, Yupan LU ; Dorozynska, Karolina LU ; Stamatoglou, Panagiota LU ; Kong, Chengdong LU ; Hurtig, Tomas ; Pfaff, Sebastian LU ; Zetterberg, Johan LU ; Richter, Mattias LU ; Kristensson, Elias LU and Ehn, Andreas LU
- organization
- publishing date
- 2021-04-01
- 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}}, }