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Laser Triggering of Electric Breakdown In Liquids

Sunesson, A ; Barmann, P ; Kröll, Stefan LU and Walfridsson, L (1994) In IEEE Transactions on Dielectrics and Electrical Insulation 1(4). p.680-691
Abstract
Electric breakdown in semihomogeneous geometries has been studied in n-hexane and transformer oil using a laser triggering method for fields far below the spontaneous breakdown field. The method uses a laser-produced plasma to initiate the breakdown. Strong self focusing in the liquids was limited by increasing the numerical aperture of the laser beam to > 0.20 prior to focusing. Electrical breakdown could be triggered at fields as low as 50 kV/cm in transformer oil and 25 kV/cm for n-hexane. The time lags are between 30 and 200 mus, depending on voltage, liquid, and gap size. Current and light emission measurements of the prebreakdown phenomena are presented and a model for the triggering process is proposed.
Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Dielectrics and Electrical Insulation
volume
1
issue
4
pages
680 - 691
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:0028482037
ISSN
1070-9878
DOI
10.1109/94.311711
language
English
LU publication?
yes
id
00355aa3-ee7d-4606-95b6-ec1677c568ca (old id 2259466)
date added to LUP
2016-04-04 09:24:54
date last changed
2025-10-14 09:38:18
@article{00355aa3-ee7d-4606-95b6-ec1677c568ca,
  abstract     = {{Electric breakdown in semihomogeneous geometries has been studied in n-hexane and transformer oil using a laser triggering method for fields far below the spontaneous breakdown field. The method uses a laser-produced plasma to initiate the breakdown. Strong self focusing in the liquids was limited by increasing the numerical aperture of the laser beam to > 0.20 prior to focusing. Electrical breakdown could be triggered at fields as low as 50 kV/cm in transformer oil and 25 kV/cm for n-hexane. The time lags are between 30 and 200 mus, depending on voltage, liquid, and gap size. Current and light emission measurements of the prebreakdown phenomena are presented and a model for the triggering process is proposed.}},
  author       = {{Sunesson, A and Barmann, P and Kröll, Stefan and Walfridsson, L}},
  issn         = {{1070-9878}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{680--691}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Transactions on Dielectrics and Electrical Insulation}},
  title        = {{Laser Triggering of Electric Breakdown In Liquids}},
  url          = {{https://lup.lub.lu.se/search/files/5317845/2297606.pdf}},
  doi          = {{10.1109/94.311711}},
  volume       = {{1}},
  year         = {{1994}},
}