Optical diagnostics of a gliding arc
(2013) In Optics Express 21(5). p.6028-6044- Abstract
- Dynamic processes in a gliding arc plasma generated between two diverging electrodes in ambient air driven by 31.25 kHz AC voltage were investigated using spatially and temporally resolved optical techniques. The life cycles of the gliding arc were tracked in fast movies using a high-speed camera with framing rates of tens to hundreds of kHz, showing details of ignition, motion, pulsation, short-cutting, and extinction of the plasma column. The ignition of a new discharge occurs before the extinction of the previous discharge. The developed, moving plasma column often short-cuts its current path triggered by Townsend breakdown between the two legs of the gliding arc. The emission from the plasma column is shown to pulsate at a frequency of... (More)
- Dynamic processes in a gliding arc plasma generated between two diverging electrodes in ambient air driven by 31.25 kHz AC voltage were investigated using spatially and temporally resolved optical techniques. The life cycles of the gliding arc were tracked in fast movies using a high-speed camera with framing rates of tens to hundreds of kHz, showing details of ignition, motion, pulsation, short-cutting, and extinction of the plasma column. The ignition of a new discharge occurs before the extinction of the previous discharge. The developed, moving plasma column often short-cuts its current path triggered by Townsend breakdown between the two legs of the gliding arc. The emission from the plasma column is shown to pulsate at a frequency of 62.5 kHz, i.e., twice the frequency of the AC power supply. Optical emission spectra of the plasma radiation show the presence of excited N-2, NO and OH radicals generated in the plasma and the dependence of their relative intensities on both the distance relative to the electrodes and the phase of the driving AC power. Planar laser-induced fluorescence of the ground-state OH radicals shows high intensity outside the plasma column rather than in the center suggesting that ground-state OH is not formed in the plasma column but in its vicinity. (c) 2013 Optical Society of America (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3765109
- author
- Sun, Zhiwei LU ; Zhu, Jiajian LU ; Li, Zhongshan LU ; Aldén, Marcus LU ; Leipold, F. ; Salewski, Mirko LU and Kusano, Y.
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Optics Express
- volume
- 21
- issue
- 5
- pages
- 6028 - 6044
- publisher
- Optical Society of America
- external identifiers
-
- wos:000316103300092
- scopus:84875155792
- ISSN
- 1094-4087
- DOI
- 10.1364/OE.21.006028
- language
- English
- LU publication?
- yes
- id
- de0efea3-8abc-4884-8f01-2e65998149c0 (old id 3765109)
- date added to LUP
- 2016-04-01 13:51:03
- date last changed
- 2022-02-19 07:46:31
@article{de0efea3-8abc-4884-8f01-2e65998149c0,
abstract = {{Dynamic processes in a gliding arc plasma generated between two diverging electrodes in ambient air driven by 31.25 kHz AC voltage were investigated using spatially and temporally resolved optical techniques. The life cycles of the gliding arc were tracked in fast movies using a high-speed camera with framing rates of tens to hundreds of kHz, showing details of ignition, motion, pulsation, short-cutting, and extinction of the plasma column. The ignition of a new discharge occurs before the extinction of the previous discharge. The developed, moving plasma column often short-cuts its current path triggered by Townsend breakdown between the two legs of the gliding arc. The emission from the plasma column is shown to pulsate at a frequency of 62.5 kHz, i.e., twice the frequency of the AC power supply. Optical emission spectra of the plasma radiation show the presence of excited N-2, NO and OH radicals generated in the plasma and the dependence of their relative intensities on both the distance relative to the electrodes and the phase of the driving AC power. Planar laser-induced fluorescence of the ground-state OH radicals shows high intensity outside the plasma column rather than in the center suggesting that ground-state OH is not formed in the plasma column but in its vicinity. (c) 2013 Optical Society of America}},
author = {{Sun, Zhiwei and Zhu, Jiajian and Li, Zhongshan and Aldén, Marcus and Leipold, F. and Salewski, Mirko and Kusano, Y.}},
issn = {{1094-4087}},
language = {{eng}},
number = {{5}},
pages = {{6028--6044}},
publisher = {{Optical Society of America}},
series = {{Optics Express}},
title = {{Optical diagnostics of a gliding arc}},
url = {{http://dx.doi.org/10.1364/OE.21.006028}},
doi = {{10.1364/OE.21.006028}},
volume = {{21}},
year = {{2013}},
}