Absolute atomic hydrogen density measurements in an atmospheric pressure plasma jet: generation, transport and recombination from the active discharge region to the effluent
Yuanfu Yue, V. S. Santosh K. Kondeti, Peter Bruggeman
Abstract
Abstract Atomic hydrogen (H) generated by an atmospheric pressure radio frequency (RF) plasma jet is investigated by two-photon absorption laser induced fluorescence in a He–H 2 mixture. The reported time and spatially resolved H density profiles enable a detailed analysis of the species generation, transport and decay along the axis of symmetry of the jet. The H density distribution for a continuous RF plasma jet corresponds well with the outcome of a Pseudo-1D plug flow model. In addition, RF power modulation has a strong effect on the H density in the active discharge region but has a negligible effect on the H density in the far effluent.
Topics & Concepts
PlasmaAtomic physicsJet (fluid)HydrogenRecombinationAtmospheric pressureAtmospheric-pressure plasmaChemistryPhysicsMeteorologyMechanicsNuclear physicsGeneBiochemistryOrganic chemistryPlasma Applications and DiagnosticsPlasma Diagnostics and ApplicationsElectrohydrodynamics and Fluid Dynamics