RT Journal Article
ID 576f7ad947810f5d
A1 Panousis, E.
A1 Clement, F.
A1 Merbahi, Nofel 
A1 Ricard, Andre 
A1 Yousfi, Mohammed 
A1 Held, B.
A1 Loiseau, J.-F.
A1 Eichwald, O.
A1 Gaboriau, F.
T1 SPECTROSCOPIC CHARACTERIZATION OF AN ATMOSPHERIC PRESSURE DBD AFTERGLOW UNDER UNIPOLAR AND BIPOLAR PULSED EXCITATION
JF High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
JO HTM
YR 2009
FD 2010-01-13
VO 13
IS 3-4
SP 359
OP 372
K1 spectroscopic diagnostics
K1 Dielectric Barrier Discharge (DBD)
K1 high voltage generator
AB This experimental work deals with the study via spectroscopic diagnostics of the afterglow issued from an atmospheric pressure Dielectric Barrier Discharge (DBD) reactor driven by two distinct High Voltage (HV) generators. The first High Voltage generator delivers unipolar (positive) square pulses of variable rise/fall time, frequency, amplitude and pulse duration. The second one delivers bipolar HV pulses of variable frequency and amplitude. After a primary electrical analysis of the behavior of the two systems, attention is drawn in the production of active species in the case of N<sub>2</sub> and Air DBD's in the afterglow.<br>
The aforementioned species' densities are estimated in these experimental conditions via optical emission spectroscopy for the N<sub>2</sub> afterglow, whereas the well known absorption method is used in the case of the Air afterglow.<br>It is shown that the unipolar mode of excitation is more efficient in the production of ozone whereas the bipolar one excels in the production of atomic Nitrogen and N<sub>2</sub>(A) metastables. These species can be used in a wide variety of surface and gas treatment applications in atmospheric pressure conditions.

PB Begell House
LK https://www.dl.begellhouse.com/journals/57d172397126f956,5cbc272245f24168,576f7ad947810f5d.html