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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.
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author
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
2012-02-09 21:47:13
date last changed
2016-10-13 04:30:05
@misc{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    = {ARRAY(0x863ebd0)},
  series       = {IEEE Transactions on Dielectrics and Electrical Insulation},
  title        = {Laser Triggering of Electric Breakdown In Liquids},
  url          = {http://dx.doi.org/10.1109/94.311711},
  volume       = {1},
  year         = {1994},
}