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On the use of the metallic nozzle of a cutting arc torch as a Langmuir probe.
(2008)
The region inside the nozzle (bore diameter ≈1 mm) of a cutting arc torch is inaccessible to
most plasma diagnostics, and numerical simulations are the only means to find out the relative
importance of several physical ...
On the Use of Sweeping Langmuir Probes in Cutting-Arc Plasmas—Part II: Interpretation of the Results.
(2008)
A semiempirical Langmuir probe model is intro duced that is particularly adapted to high-energy-density cutting
arcs, for which, as we have shown in Part I, the ion current
collected by negatively biased probes shows no ...
Hydrodynamic Model for the Plasma-Gas Flow in a Cutting Torch Nozzle.
(2004)
We present a simple hydrodynamic model to obtain the profiles of the relevant physical quantities along a nozzle
of arbitrary cross-section in a cutting torch. The model uses a two-zone approximation (a hot central ...
On the Use of Sweeping Langmuir Probes in Cutting Arc Plasmas—Part I: Experimental Results.
(2008)
The first study of Langmuir probes applied to cut ting arcs using a sweeping-probe system is presented. It is found
that, under a relatively broad range of experimental conditions
(changes in the probe material, in the ...
Quantitative Schlieren Diagnostic Applied to a Nitrogen Thermal Plasma Jet.
(2018)
— A quantitative interpretation of the schlieren
technique applied to an atmospheric pressure, vortex-stabilized
nitrogen thermal plasma jet generated in a direct-current
nontransferred arc plasma torch (nitrogen gas ...
Effects of non–thermal plasmas on seed-borne Diaporthe/Phomopsis complex and germination parameters of soybean seeds.
(2018)
Diaporthe/Phomopsis (D/P) is a complex of seed-borne fungi that severely affects soybean (Glycine max (L.)
Merrill), one of the most important crops worldwide. Non-thermal plasma treatment is a fast, economic and ...
On the Double-Arcing Phenomenon in a Cutting Arc Torch.
(2011)
Transferred arc plasma torches are widely used in industrial cutting process of metallic
materials because of their ability to cut almost any metal and the very high productivity that
can be achieved with this technology ...
Investigation of the relevant kinetic processes in the initial stage of a double-arcing instability in oxygen plasmas.
(2018)
A numerical investigation of the kinetic processes in the initial (nanosecond range) stage of the
double-arcing instability was developed. The plasma-sheath boundary region of an oxygen operated cutting torch was considered. ...
On the influence of the nozzle length on the arc properties in a cutting torch
(2009)
In this work, an experimental study on the influence of the nozzle geometry on the
physical properties of a cutting arc is reported. Ion current signals collected by an electrostatic
probe sweeping across a 30 A oxygen ...
On the dynamic behavior of the anode–arc–root at the nozzle surface in a non-transferred plasma torch
(2012)
The dynamic behavior of the anode–arc–root at the nozzle surface of a plasma torch
was experimentally investigated in this work. A gas (N2) vortex–stabilized non–transferred arc
torch with a thoriated tungsten rod (2wt ...