Branching of negative streamers in free flight

Details Branching of negative streamers in free flight Branching of negative streamers in free flight

2002-04-22

arxiv.org/abs/cond-mat/0204474v1

Phys. Rev. E 66, 035102(R) (2002)

Physics

Condensed Matter

Materials Science

4 pages, 3 figures

Scientific paper

10.1103/PhysRevE.66.035102

We recently have shown that a negative streamer in a sufficiently high homogeneous field can branch spontaneously due to a Laplacian instability, rather than approach a stationary mode of propagation with fixed radius. In our previous simulations, the streamer started from a wide initial ionization seed on the cathode. We here demonstrate in improved simulations that a streamer emerging from a single electron branches in the same way. In fact, though the evolving streamer is much more narrow, it branches after an even shorter propagation distance.

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