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On the Secondary Discharge of an Atmospheric-Pressure Pulsed DBD in He with Impurities

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3 Author(s)
Alina Silvia Chiper ; Plasma Phys. Dept., Univ. of Iasi, Iasi ; Radu Cazan ; Gheorghe Popa

The secondary discharge was induced at the end of a slow-falling voltage flank, when a semisine monopolar pulse voltage excites the dielectric-barrier discharge. Formation and properties of the secondary discharge with respect to different dielectric materials such as glass, ceramic, and polyethylene theraphtalate were studied. The tunable diode laser absorption spectrometry (at 777.194 nm) was used to analyze the time-space distribution of the density of the atomic oxygen in metastable state (35S2 rarr 35P3) in addition to both discharge voltage and discharge current versus time. The secondary discharge is always formed, and its amplitude, as well as the amplitude of the main discharge, depends on surface properties of the dielectric barrier.

Published in:

IEEE Transactions on Plasma Science  (Volume:36 ,  Issue: 5 )