11 January 2000 Contraction of laser-generated plasma channels under ambient electric fields
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Proceedings Volume 3886, High-Power Lasers in Energy Engineering; (2000); doi: 10.1117/12.375108
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan
Abstract
To define more precisely the requirements to electric- physical parameters of laser-generated plasma channel needed to trigger a lightning, the analysis of the experimental data on laser-guided long gap discharges is used. The analysis is based on the developed theoretical model of the channel interaction with thunderstorm electrical fields. Two modes of leader progression form a tip of the channel are considered. The obtained data allows determining the principal conversion conditions of the channel into a leader channel. To maintain the plasma channel conductivity during the modes, two laser pulses is supposed to be used. The suggestion was tested experimentally by the use of CO2 and Nd laser.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mikhail F. Borisov, Valentin M. Gromovenko, Vladimir A. Lapshin, Yuri A. Rezunkov, "Contraction of laser-generated plasma channels under ambient electric fields", Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); doi: 10.1117/12.375108; https://doi.org/10.1117/12.375108
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KEYWORDS
Plasma

Atmospheric plasma

Plasma generation

Carbon dioxide lasers

Pulsed laser operation

Ionization

Molecules

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