Plasma Sources Science and Technology · 2015 · 42 citations · 33 references
Ultraviolet LightEngineeringGlow DischargeAtmospheric PressurePlasma PhysicsOptical DiagnosticsThermodynamicsPulse PowerInstrumentationNonthermal PlasmaDielectric BarriersDielectric Barrier DischargePrecise EnergyHigh Energy Density PhysicsPlasma DiagnosticsElectrical EngineeringDielectric Barrier DischargesPhysicsTime-dependent Dielectric BreakdownDischarge CycleHeat TransferHigh Energy Density Plasma PhysicsNatural SciencesSpectroscopyApplied PhysicsGas Discharge PlasmaPlasma ApplicationElectrical Insulation
The work investigates atmospheric pressure glow discharge plasma in flowing helium, employing five thermometers—including fiber‑optic probes immune to high voltage—to conduct the first detailed calorimetric study of He APGD. A specially designed dielectric barrier discharge cell with twin dielectric discs of varying permittivities was used to measure electrical energy per cycle across 5–50 kHz in He, Ne, Ar, and N₂, with refined algorithms enabling rapid data acquisition and processing. The energy balance, including VUV emission, agrees well, validating the measurements and methodology, and comparison with literature yields several important conclusions and recommendations.
A specially designed dielectric barrier discharge (DBD) cell and associated equipment has been used to carry out precise measurements of electrical energy, , dissipated per discharge cycle of the applied ac voltage, Va over the frequency range 5 ⩽ ⩽ 50 kHz. Twin pairs of several different dielectric materials (2.54 cm diameter discs, thicknesses = 2.0 or ca. 0.1 mm) with relative permittivities between 2.1 ⩽ ⩽ 9.5 were used as dielectric barriers in DBDs of four different gases: He, Ne, Ar and N2. Much of the work relates to the study of atmospheric pressure glow discharge (APGD) plasma in flowing He gas; five separate thermometers (including fiber-optic probes immune to high voltage and high-frequency electromagnetic fields) have enabled us to perform a detailed calorimetric (heat balance) investigation in He APGD, believed to be the first of its kind. Fair agreement in the overall energy balance, which includes vacuum ultraviolet (VUV) light emission, lends strong support to the validity of both measurements and methodology. The latter includes refined algorithms that permit rapid data acquisition and processing. The present results are compared with literature, allowing several important conclusions/recommendations to emerge.
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Gregory Fridman, Gary Friedman, Alexànder Gutsol et al. · Plasma Processes and Polymers · 2008 · 2K citations
Stable glow plasma at atmospheric pressure
Seiji Kanazawa, Masuhiro Kogoma, Takao Moriwaki et al. · Journal of Physics D Applied Physics · 1988 · 682 citations
Cold Atmospheric Plasma, Chemical Engineering, Engineering +11