Contraction of laser-generated plasma channels under ambient electric fields

Mikhail F. Borisov; Valentin M. Gromovenko; Vladimir A. Lapshin; Yuri A. Rezunkov

doi:10.1117/12.375108

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11 January 2000 Contraction of laser-generated plasma channels under ambient electric fields

Mikhail F. Borisov, Valentin M. Gromovenko, Vladimir A. Lapshin, Yuri A. Rezunkov

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Proceedings Volume 3886, High-Power Lasers in Energy Engineering; (2000) https://doi.org/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.

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Mikhail F. Borisov, Valentin M. Gromovenko, Vladimir A. Lapshin, and 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); https://doi.org/10.1117/12.375108

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