Guiding of positive streamers in nitrogen, argon and N2-O2 mixtures by very low ne laser-induced pre-ionization trails

S. Nijdam, E. Takahashi

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Abstract

In previous work we have shown that positive streamers in pure nitrogen can be guided by a laser-induced trail of low electron density. Here we show more detailed results from such measurements. We show the sensitivity of this laser-guiding on pressure p and found that the maximum delay between the laser pulse and voltage pulse for guiding scales with something between $1/p$ and $1/p^{2}$. We also show that when we use a narrower laser beam the laser guiding occurs less frequent and that when we move the laser beam away from the symmetry axis, guiding hardly is observed. Finally we show that laser guiding can also occur in pure argon.
Original languageEnglish
Number of pages3
Publication statusPublished - Jul 2015
Event32nd International Conference on Phenomena in Ionized Gases (ICPIG 2015), July 26-31, 2015, Iasi, Romania - Iasa, Romania
Duration: 26 Jul 201531 Jul 2015
http://www.icpig2015.net/

Conference

Conference32nd International Conference on Phenomena in Ionized Gases (ICPIG 2015), July 26-31, 2015, Iasi, Romania
Abbreviated titleICPIG 2015
CountryRomania
CityIasa
Period26/07/1531/07/15
Internet address

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