Absolute Number Density Measurements of O Atom Over a Catalyzing Surface in Air Plasmas

Spatially resolved laser-spectroscopic measurements of atomic oxygen consumed by surface-catalyzed reactions in air plasma recently been obtained in the 30 kW Inductively Coupled Plasma Torch Facility at the University of Vermont. A newly developed calibration procedure to convert atomic specie measurements into absolute number densities has been applied. Absolute number densities of oxygen atom in the boundary layer of a catalytic surface provide insight into the plasma composition and energy deposited on the surface due to surface catalyzed recombination of atomic nitrogen and oxygen in air plasma.