Probing background ionization: positive streamers with varying pulse repetition rate and with a radioactive admixture

@article{Nijdam2011ProbingBI,
  title={Probing background ionization: positive streamers with varying pulse repetition rate and with a radioactive admixture},
  author={Sander Nijdam and Gideon Wormeester and Eddie van Veldhuizen and Ute Ebert},
  journal={Journal of Physics D: Applied Physics},
  year={2011},
  volume={44},
  pages={455201}
}
Positive streamers need a source of free electrons ahead of them to propagate. A streamer can supply these electrons by itself through photo-ionization, or the electrons can be present due to external background ionization. Here we investigate the effects of background ionization on streamer propagation and morphology by changing the gas composition and the repetition rate of the voltage pulses, and by adding a small amount of radioactive 85Kr. We find that the general morphology of a positive… 

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    Physical review. E, Statistical, nonlinear, and soft matter physics
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TLDR
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