Open AccessIncrease of electric field on streamer/surfaces contact area with using external electrode
Author(s) -
I. V. Schweigert,
S. Vagapov,
Li Lin,
Michael Keidar
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1394/1/012005
Subject(s) - ionization , electric field , electrode , plasma , jet (fluid) , dielectric , atomic physics , surface charge , materials science , chemistry , analytical chemistry (journal) , ion , mechanics , optoelectronics , physics , organic chemistry , chromatography , quantum mechanics
Nowadays, a low-temperature atmospheric plasma jets are widely used in the anticancer therapy. Enhancement of electric field near the surface is one of possible ways to increase an efficiency of plasma jet treatment. Another mechanism of plasma jet’s influence on living cells is generating reactive oxygen nitrogen species (RONS). In this work effect of presence of external biased electrode was studied. Electric fields near the dielectric surface and zone of interaction were much higher than that near the conductive one due to accumulation of charge on the surface. The evolution of ionization rate near the surface was studied. It was observed experimentally and in the simulation that there are two main stages of evolution – the stage of fast ionization which is few hundreds of ns long and the stage of slow ionization with characteristic time of ∼10 µs. A 0D modelling was applied in the boundary layer near the surface in order to obtain mixture composition of RONS after several pulses.