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dc.contributor.authorEs-sebbar, Et-touhami
dc.contributor.authorBauville, G.
dc.contributor.authorFleury, M.
dc.contributor.authorPasquiers, S.
dc.contributor.authorSousa, J. Santos
dc.date.accessioned2021-07-11T12:19:47Z
dc.date.available2021-07-11T12:19:47Z
dc.date.issued2019
dc.identifier.citationEs-sebbar, E., Bauville, G., Fleury, M., Pasquiers, S., & Santos Sousa, J. (2019). Spatio-temporal distribution of absolute densities of argon metastable 1s5 state in the diffuse area of an atmospheric pressure nanosecond pulsed argon microplasma jet propagating into ambient air. Journal of Applied Physics, 126(7), 073302. doi:10.1063/1.5096407
dc.identifier.issn1089-7550
dc.identifier.issn0021-8979
dc.identifier.doi10.1063/1.5096407
dc.identifier.urihttp://hdl.handle.net/10754/670115
dc.description.abstractAtmospheric microplasma jets (MPJs) sustained in rare gases have gained increased attention due to their potential to generate highly reactive species. In this paper, we present space- and time-resolved argon metastable densities, Ar(1s5), measured in an atmospheric pressure MPJ operated in Ar and propagating into ambient air using tunable diode laser absorption spectroscopy (1s5 → 2p9 optical transition). The MPJ was produced using a dielectric barrier discharge energized by short duration (230 ns) high-voltage positive pulses (4.2-6.2 kV) at a repetition frequency of 20 kHz. The spectral absorption line profile was recorded and allowed measurements of the absolute metastable Ar(1s5) density integrated in the line-of-sight of the laser beam under various operating conditions of the MPJ. The results reveal a sensitive dependence of the Ar(1s5) density on spatial coordinates, i.e., distance from the exit of the capillary tube of the discharge and from the axis of the argon jet. The highest Ar(1s5) densities of about 3 × 1013 cm-3 were measured at the axis of the argon jet at longitudinal distances between 4 and 5.5 mm downstream from the nozzle of the tube. The temporal distribution of the Ar(1s5) density, which presents three maxima, is thoroughly discussed in this paper. The spatial distribution of the effective Ar(1s5) lifetime (<250 ns) is also reported, giving some insight into the surrounding environment of the argon metastable atoms. The determined spatiotemporal distributions of the Ar(1s5) density can be useful for the optimization of argon MPJs for different applications like surface or biomedical processes.
dc.description.sponsorshipThe authors thank V. Puech (LPGP), N. Sadeghi (LIPHY, CNRS, Univ. Grenoble, France), and A. Michau (LSPM, CNRS, Univ. Paris 13, France) for valuable discussions. This work was supported by the French “Agence Nationale de la Recherche” (ANR) through the PLASPAMS project (Grant No. ANR-2013-SECU-0002-03).
dc.publisherAIP Publishing
dc.relation.urlhttp://aip.scitation.org/doi/10.1063/1.5096407
dc.rightsThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in JOURNAL OF APPLIED PHYSICS and may be found at http://doi.org/10.1063/1.5096407.
dc.titleSpatio-temporal distribution of absolute densities of argon metastable 1s(5) state in the diffuse area of an atmospheric pressure nanosecond pulsed argon microplasma jet propagating into ambient air
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJOURNAL OF APPLIED PHYSICS
dc.identifier.wosutWOS:000483849000014
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionLPGP, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91045 Orsay, France
dc.identifier.volume126
dc.identifier.issue7
dc.identifier.pages073302
kaust.personEs-sebbar, Et-touhami
dc.identifier.eid2-s2.0-85071188698


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