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Physics of PlasmasVolume 8, Issue 5 II, May 2001, Pages 2532-253942nd Annual Meeting of the APS Division of Plasma Physics; Quebec, Que; Canada; 23 October 2000 through 27 October 2000; Code 58207

Triggering and guiding high-voltage large-scale leader discharges with sub-joule ultrashort laser pulses(Article)

  • Pépin, H.,
  • Comtois, D.,
  • Vidal, F.,
  • Chien, C.Y.,
  • Desparois, A.,
  • Johnston, T.W.,
  • Kieffer, J.C.,
  • La Fontaine, B.,
  • Martin, F.,
  • Rizk, F.A.M.,
  • Potvin, C.,
  • Couture, P.,
  • Mercure, H.P.,
  • Bondiou-Clergerie, A.,
  • Lalande, P.,
  • Gallimberti, I.
  • View Correspondence (jump link)
  • aINRS-Energie et Matériaux, 1650 bv Lionel Boulet, Varennes, Que. J3X 1S2, Canada
  • bIREQ, Hydro-Québec, 1800 bv Lionel Boulet, Varennes, Que. J3X 1S1, Canada
  • cONERA Châtillon, 29 av de la Division Ledere, F-92322 Châtillon Cedex, France
  • dDept. of Electrical Engineering, University of Padova, 35100 Padova, Italy

Abstract

The triggering and guiding of leader discharges using a plasma channel created by a sub-joule ultrashort laser pulse have been studied in a megavolt large-scale electrode configuration (3-7 m rod-plane air gap). By focusing the laser close to the positive rod electrode it has been possible, with a 400 mJ pulse, to trigger and guide leaders over distances of 3 m, to lower the leader inception voltage by 50%, and to increase the leader velocity by a factor of 10. The dynamics of the breakdown discharges with and without the laser pulse have been analyzed by means of a streak camera and of electric field and current probes. Numerical simulations have successfully reproduced many of the experimental results obtained with and without the presence of the laser plasma channel. © 2001 American Institute of Physics.

  • ISSN: 1070664X
  • CODEN: PHPAE
  • Source Type: Journal
  • Original language: English
  • DOI: 10.1063/1.1342230
  • Document Type: Article
  • Editors: Boozer A.H.,Tendler M.

  Pépin, H.; INRS-Energie et Matériaux, 1650 bv Lionel Boulet, Canada
© Copyright 2006 Elsevier B.V., All rights reserved.

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