Long-lived laser-induced arc discharges for energy channeling applications

Abstract : Laser filamentation offers a promising way for the remote handling of large electrical power in the form of guided arc discharges. We here report that it is possible to increase by several orders of magnitude the lifetime of straight plasma channels from filamentation-guided sparks in atmospheric air. A 30 ms lifetime can be reached using a low-intensity, 100 mA current pulse. Stability of the plasma shape is maintained over such a timescale through a continuous Joule heating from the current. This paves the way for applications based on the generation of straight, long duration plasma channels, like virtual plasma antennas or contactless transfer of electric energy.
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Scientific Reports, Nature Publishing Group, 2017, 7 (1), pp.13801. 〈10.1038/s41598-017-14054-z〉
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Guillaume Point, Leonid Arantchouk, Emmanuelle Thouin, Jérôme Carbonnel, André Mysyrowicz, et al.. Long-lived laser-induced arc discharges for energy channeling applications. Scientific Reports, Nature Publishing Group, 2017, 7 (1), pp.13801. 〈10.1038/s41598-017-14054-z〉. 〈hal-01622332〉

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