O{sub 2}(a{sup 1}{delta}{sub g}) production at atmospheric pressure by microdischarge

Journal Article · Mon Jul 07 04:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2957032· OSTI ID:21123981

Sousa, J Santos; Bauville, G; Lacour, B; Puech, V ^[1]; Touzeau, M ^[2]; Pitchford, L C ^[3]

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1. Laboratoire de Physique des Gaz et des Plasmas, CNRS and Universite Paris-Sud, 91405 Orsay Cedex (France)
2. Laboratoire des Technologies de la Micro-electronique, CNRS and Universite Fourier, 38054 Grenoble Cedex (France)
3. LAPLACE, University of Toulouse, CNRS-UPS-INP, 31062 Toulouse Cedex (France)

We report experimental results showing that singlet oxygen O{sub 2}(a{sup 1}{delta}{sub g}) can be efficiently produced at atmospheric pressure in a three-electrode microcathode sustained discharge (MCSD) configuration. This configuration consists of a microhollow cathode discharge (MHCD) acting as a plasma cathode to sustain a stable glow discharge between the MHCD and a third planar electrode placed at a distance of 8 mm. Experiments were performed in He/O{sub 2}/NO mixtures. O{sub 2}(a{sup 1}{delta}{sub g}) number densities higher than 10{sup 16} cm{sup -3} were measured in the MCSD afterglow at total flow rates up to 30 ln/mn, resulting in O{sub 2}(a{sup 1}{delta}{sub g}) fluxes above 10 millimole per hour (mmol/h)

• OSTI ID: 21123981
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 1 Vol. 93; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AFTERGLOW
ATMOSPHERIC PRESSURE
CATHODES
DENSITY
FLOW RATE
GLOW DISCHARGES
MIXTURES
OXYGEN
PLASMA