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Interaction of streamer discharges in air and other oxygen-nitrogen mixtures
A Luque1, U Ebert, W Hundsdorfer
1CWI, P.O. Box 94079, 1090 GB Amsterdam, The Netherlands.
Abstract:
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.
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