Probing photo-ionization: experiments on positive streamers in pure gases and mixtures
Probing photo-ionization: experiments on positive streamers in pure gases and mixtures
Positive streamers are thought to propagate by photo-ionization of which the parameters depend on the nitrogen:oxygen ratio.Therefore we study streamers in nitrogen with 20%, 0.2% and 0.01% oxygen and in pure nitrogen, as well as in pure oxygen and argon.Our new experimental set-up guarantees contamination of the pure gases to …