Phys. Rev. Lett. 101, 075005 (2008) [4 pages]Interaction of Streamer Discharges in Air and Other Oxygen-Nitrogen MixturesReceived 18 December 2007; published 15 August 2008 The interaction of streamers in nitrogen-oxygen mixtures such as air is studied. First, an efficient method for fully three-dimensional streamer simulations in multiprocessor machines is introduced. With its help, we find two competing mechanisms how two adjacent streamers can interact: through electrostatic repulsion and through attraction due to nonlocal photoionization. The nonintuitive effects of pressure and of the nitrogen-oxygen ratio are discussed. As photoionization is experimentally difficult to access, we finally suggest to measure it indirectly through streamer interactions. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.075005
DOI:
10.1103/PhysRevLett.101.075005
PACS:
52.80.Mg, 05.45.−a, 52.27.Aj
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