We report the experimental demonstration of plasma generation by time-reversal focusing. After a learning phase, the amplified time reversed signal built at a central frequency of 2.45 GHz injected in a low loss metallic cavity allows us to ignite and maintain a localized centimeter-sized plasma in argon at 133 Pa. The plasma spatial position is totally controlled by the signal waveform.
Plasma generation using time reversal of microwaves
Valentin Mazières, Romain Pascaud, Laurent Liard, Simon Dap, Richard Clergereaux, Olivier Pascal; Plasma generation using time reversal of microwaves. Appl. Phys. Lett. 7 October 2019; 115 (15): 154101. https://doi.org/10.1063/1.5126198
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