Features of electrical discharges in air triggered by laser |
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Authors: | Víctor March Manuel Arrayás José Luis Trueba Joan Montanyà David Romero Glòria Solà Daniel Aranguren |
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Affiliation: | 1. Electrical Engineering Department, Technological University of Catalonia (UPC), Colon, 1, Terrassa (Barcelona) 08222, Spain;2. Universidad Rey Juan Carlos, Spain |
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Abstract: | A numerical study of laser-triggered discharges in air at atmospheric pressure is presented for an ultraviolet laser in small gaps. Two models, one for the ionization of the air by the laser pulse and the second for the streamer evolution have been computed. From results of numerical simulations the influence of the laser parameters such as energy, pulse duration and beam radius is analyzed and electron distributions are obtained for different small gaps. Electric field, streamer velocity and evolution of the ionized volume are calculated by means of streamer simulations. This paper shows the main features of the laser-triggered discharges and also the importance of using numerical simulations in a laser-triggered experiment. |
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