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Title: HV discharge acceleration by sequences of UV laser filaments with visible and near-infrared pulses

Journal Article · · New Journal of Physics

We investigate the triggering and guiding of DC high-voltage discharges over a distance of 37 cm by filaments produced by ultraviolet (266 nm) laser pulses of 200 ps duration. The latter reduce the breakdown electric field by half and allow up to 80% discharge probability in an electric field of 920 kV m–1. This high efficiency is not further increased by adding nanosecond pulses in the Joule range at 532 and at 1064 nm. However, the latter statistically increases the guiding length, thereby accelerating the discharge by a factor of 2. This effect is due both to photodetachment and to the heating of the plasma channel, that increases the efficiency of avalanche ionization and reduces electron attachment and recombination.

Research Organization:
Southwest Sciences, Inc., Santa Fe, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0011446
OSTI ID:
1437772
Alternate ID(s):
OSTI ID: 1500031
Journal Information:
New Journal of Physics, Journal Name: New Journal of Physics Vol. 19 Journal Issue: 12; ISSN 1367-2630
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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  • Ionin, A. A.; Kudryashov, S. I.; Makarov, S. V.
  • INTERNATIONAL SYMPOSIUM ON HIGH POWER LASER ABLATION 2012, AIP Conference Proceedings https://doi.org/10.1063/1.4739868
conference January 2012
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Cited By (2)

Towards Remote Lightning Manipulation by Meters-long Plasma Channels Generated by Ultra-Short-Pulse High-Intensity Lasers journal January 2019
HV discharges triggered by dual- and triple-frequency laser filaments journal January 2019

Figures / Tables (6)