Comparison of two electric field measurement methods for a kHz microsecond atmospheric pressure plasma jet

Xavier Damany , G. Sretenović (1) , Sylvain Iséni (1) , Vesna Kovačević (2) , Ivan Krstić (2) , Sebastien Dozias (1) , Jean-Michel Pouvesle (1) , Milorad Kuraica (2) , Eric Robert (1)

1 GREMI - Groupe de recherches sur l'énergétique des milieux ionisés
2 University of Belgrade [Belgrade]

Electric field associated with a kHz microsecond atmospheric pressure plasma jet has been measured using two different methods. The first one consists in an electro-optic probe allowing to measure the electric field outside the capillary in which propagates the plasma. The second one relies on Stark polarization spectroscopy on the 492.19nm line of helium. If the first one offers a nice time resolution, the second method has a better spatial accuracy but can be used only where light is emitted by the plasma. Thus these two methods complement one another and can even be compared depending on the conditions. If plasma is powered by a positive polarity voltage pulse both techniques are in good agreement. Nevertheless when negative polarity is used some discrepancies are observed.

Domaines: Physique des plasmas [physics.plasm-ph]; Plasmas; Electromagnétisme; Optique / photonique

Xavier Damany, G. Sretenović, Sylvain Iséni, Vesna Kovačević, Ivan Krstić, et al.. Comparison of two electric field measurement methods for a kHz microsecond atmospheric pressure plasma jet. XXXIII International Conference on Phenomena in Ionized Gases (ICPIG XXXIII), Jul 2017, Estoril, Portugal. , 2017. ⟨hal-02056854⟩