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

Abstract

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.

Authors:
; ; ; ; ; ORCiD logo; ; ;
Publication Date:
Research Org.:
Southwest Sciences, Inc., Santa Fe, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1437772
Alternate Identifier(s):
OSTI ID: 1500031
Grant/Contract Number:  
SC0011446
Resource Type:
Published Article
Journal Name:
New Journal of Physics
Additional Journal Information:
Journal Name: New Journal of Physics Journal Volume: 19 Journal Issue: 12; Journal ID: ISSN 1367-2630
Publisher:
IOP Publishing
Country of Publication:
United Kingdom
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Schubert, Elise, Rastegari, Ali, Feng, Chengyong, Mongin, Denis, Kamer, Brian, Kasparian, Jérôme, Wolf, Jean-Pierre, Arissian, Ladan, and Diels, Jean-Claude. HV discharge acceleration by sequences of UV laser filaments with visible and near-infrared pulses. United Kingdom: N. p., 2017. Web. doi:10.1088/1367-2630/aa9b76.
Schubert, Elise, Rastegari, Ali, Feng, Chengyong, Mongin, Denis, Kamer, Brian, Kasparian, Jérôme, Wolf, Jean-Pierre, Arissian, Ladan, & Diels, Jean-Claude. HV discharge acceleration by sequences of UV laser filaments with visible and near-infrared pulses. United Kingdom. doi:10.1088/1367-2630/aa9b76.
Schubert, Elise, Rastegari, Ali, Feng, Chengyong, Mongin, Denis, Kamer, Brian, Kasparian, Jérôme, Wolf, Jean-Pierre, Arissian, Ladan, and Diels, Jean-Claude. Fri . "HV discharge acceleration by sequences of UV laser filaments with visible and near-infrared pulses". United Kingdom. doi:10.1088/1367-2630/aa9b76.
@article{osti_1437772,
title = {HV discharge acceleration by sequences of UV laser filaments with visible and near-infrared pulses},
author = {Schubert, Elise and Rastegari, Ali and Feng, Chengyong and Mongin, Denis and Kamer, Brian and Kasparian, Jérôme and Wolf, Jean-Pierre and Arissian, Ladan and Diels, Jean-Claude},
abstractNote = {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.},
doi = {10.1088/1367-2630/aa9b76},
journal = {New Journal of Physics},
number = 12,
volume = 19,
place = {United Kingdom},
year = {2017},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1088/1367-2630/aa9b76

Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: Experimental setup. The green (G) and infrared (IR) lasers are resized by a telescope (not shown) to match the ultraviolet (UV) beam diameter before being coupled with dichroic mirrors.

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