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HV discharge acceleration by sequences of UV laser filaments with visible and near-infrared pulses
HV discharge acceleration by sequences of UV laser filaments with visible and near-infrared pulses
- Source :
- New Journal of Physics, Vol. 19, No 12 (2017) P. 123040
- Publication Year :
- 2017
- Publisher :
- arXiv, 2017.
-
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. This high efficiency is not further increased by adding nanosecond pulses in the Joule range at 532 nm and 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.<br />Comment: 12 pages, 6 figures
- Subjects :
- General Physics and Astronomy
FOS: Physical sciences
ddc:500.2
Applied Physics (physics.app-ph)
medicine.disease_cause
7. Clean energy
01 natural sciences
law.invention
010309 optics
law
Electric field
Ionization
0103 physical sciences
medicine
010306 general physics
Ultraviolet
ddc:333.7-333.9
Physics
Physics - Applied Physics
High-voltage
Plasma
Ultrashort laser
Nanosecond
Laser
Visible
Filament
Discharge
Plasma channel
Electric potential
Atomic physics
Infrared
Physics - Optics
Optics (physics.optics)
Subjects
Details
- ISSN :
- 13672630
- Database :
- OpenAIRE
- Journal :
- New Journal of Physics, Vol. 19, No 12 (2017) P. 123040
- Accession number :
- edsair.doi.dedup.....9e25b8c5d207a5aba154fed1cda56025
- Full Text :
- https://doi.org/10.48550/arxiv.1712.08483