Publication de 4 numéros par an
ISSN Imprimer: 1093-3611
ISSN En ligne: 1940-4360
Indexed in
SPECTROSCOPIC CHARACTERIZATION OF AN ATMOSPHERIC PRESSURE DBD AFTERGLOW UNDER UNIPOLAR AND BIPOLAR PULSED EXCITATION
RÉSUMÉ
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 N2 and Air DBD's in the afterglow.
The aforementioned species' densities are estimated in these experimental conditions via optical emission spectroscopy for the N2 afterglow, whereas the well known absorption method is used in the case of the Air afterglow.
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 N2(A) metastables. These species can be used in a wide variety of surface and gas treatment applications in atmospheric pressure conditions.
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Primc Gregor, Zaplotnik Rok, Vesel Alenka, Mozetic Miran, Microwave discharge as a remote source of neutral oxygen atoms, AIP Advances, 1, 2, 2011. Crossref
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Kettlitz M, Höft H, Hoder T, Weltmann K-D, Brandenburg R, Comparison of sinusoidal and pulsed-operated dielectric barrier discharges in an O2/N2mixture at atmospheric pressure, Plasma Sources Science and Technology, 22, 2, 2013. Crossref
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Chen Y. Y., Cai Y. X., Li X. H., Shi Y. X., Zheng Y., Experimental study on regenerating fouled EGR cooler by NTPI technology, International Journal of Automotive Technology, 16, 2, 2015. Crossref
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Höft H, Becker M M, Kettlitz M, Brandenburg R, Upscaling from single- to multi-filament dielectric barrier discharges in pulsed operation, Journal of Physics D: Applied Physics, 55, 42, 2022. Crossref