Triggering and guiding of megavolt discharges by laser-induced filaments under rain conditions

Ackermann, R.; Stelmaszczyk, K.; Rohwetter, P.; Méjean, G.; Salmon, E.; Yu, J.; Kasparian, J.; Méchain, G.; Bergmann, V.; Schaper, S.; Weise, B.; Kumm, T.; Rethmeier, K.; Kalkner, W.; Wouml;ste, L.; Wolf, J. P.
December 2004
Applied Physics Letters;12/6/2004, Vol. 85 Issue 23, p5781
Academic Journal
We demonstrate laser control of high-voltage discharges over a gap of 1.2 m filled with a dense water cloud. Self-guided filaments generated by ultrashort laser pulses are transmitted through the cloud and ionize a continuous plasma channel. The cloud typically reduces the discharge probability in given experimental conditions by 30%, but has almost no influence on the threshold required to trigger single discharge events, both in electrical field and laser energy. This result is favorable for real-scale lightning control applications.


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