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On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the “non-destructive” double-arcing phenomenon
(2011)
Experimental observations on the plasma dynamics inside the nozzle of a 30 A oxygen cutting torch
operated at conditions close to the double arcing are reported. It is employed a technique previously
developed in our ...
Schlieren technique applied to the arc temperature measurement in a high energy density cutting torch.
(2010)
Plasma temperature and radial density profiles of the plasma species in a high energy density cutting
arc have been obtained by using a quantitative schlieren technique. A Z-type two-mirror schlieren
system was used in ...
Modelling of an Atmospheric–Pressure Air Glow Discharge Operating in High–Gas Temperature Regimes: The Role of the Associative Ionization Reactions Involving Excited Atoms.
(2020)
A model of a stationary glow-type discharge in atmospheric-pressure air operated in
high-gas-temperature regimes (1000 K < Tg < 6000 K), with a focus on the role of associative ionization
reactions involving N(2D,2P)-excited ...
Glow Discharge in a High-Velocity Air Flow: The Role of the Associative Ionization Reactions Involving Excited Atoms.
(2019)
A kinetic scheme for non-equilibrium regimes of atmospheric pressure air discharges
is developed. A distinctive feature of this model is that it includes associative ionization with
the participation of N(2D, 2P) atoms. ...
Plasma Cutting of Concrete: Heat Propagation and Molten Material Removal From the Kerf.
(2019)
An experimental investigation of heat propagation
in the case of plasma cutting of concrete is reported. The
experiments were carried out by using a high-enthalpy nitrogen
plasma jet generated in a dc vortex-stabilized ...
Improvement of growth and yield of soybean plants through the application of non-thermal plasmas to seeds with different health status.
(2019)
Soybean (Glycine max (L.) Merrill) is a globally important crop, providing oil and
protein. Diaporthe/Phomopsis complex includes seed-borne pathogens that affect
this legume. Non-thermal plasma treatment is a fast, ...
Experimental Characterization of a Low-Current Cutting Torch.
(2004)
An experimental characterization of a low-current (30-40 A) cutting torch is presented. To avoid contamination
of the plasma arc by removed anode material, a rotating steel cylinder was used as the anode and the arc ...
Ambient Species Density and Gas Temperature Radial Profiles Derived from a Schlieren Technique in a Low Frequency Non-thermal Oxygen Plasma Jet.
(2017)
A quantitative interpretation of the schlieren technique applied to a non-thermal
atmospheric-pressure oxygen plasma jet driven at low-frequency (50 Hz) is reported. The
jet was operated in the turbulent regime with a ...
Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.
(2017)
A two-dimensional model of the non-equilibrium unipolar discharge occurring
in the plasma–sheath boundary region of a transferred-arc was developed. This model was
used to study the current transfer to the nozzle (1 mm ...
Modelling of an Atmospheric Pressure Nitrogen Glow Discharge Operating in High-Gas Temperature Regimes.
(2016)
A model of an atmospheric pressure nitrogen glow discharge in high-gas tem perature regimes is developed. The model considers a fairly complete set of chemical
reactions, including several processes with the participation ...