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Laboratorio de Descargas Eléctricas


Integrantes del grupo

Héctor Kelly (Director del grupo)

Diana Grondona (A cargo de la línea descargas de alta presión y diagnósticos de plasma)
Adriana Márquez (A cargo de procesamiento de materiales por plasma)
Fernando Minotti (A cargo de línea de teoría y modelos de descargas eléctricas)

Leandro Giuliani
Ariel Kleiman
Beatriz Mancinelli (Venado Tuerto)
Leandro Prevosto (Venado Tuerto)

Lina María Franco Arias
Jorge Luis Gallego Cano
Mariana Fazio

Colaboraciones

Grupo de Fluido-dinámica FI-UBA
Grupo de Optica y Plasmas de la Pontificia Universidad Católica de Chile
Grupo de descargas eléctricas de la Universidad de Tel Aviv
Universidad del Valle (Cali)
CINSO (CITEFA-CONICET)
Departamento de Química CNEA

Temas de Investigación

Arcos de baja presión (evaporadores catódicos)
Plasma no-térmicos de alta presión: Descargas de Barrera Dieléctrica y Corona
Antorchas de Corte

Experimentos

Arco continuo con isla magnética (100 A)
Arco pulsado con filtro magnético recto
(450 A, 35 ms, B < 500 G)
Arco continuo con filtro magnético curvo
(100 A, B < 150 G)

 

 

Descarga combinada (Corona y barrera dieléctrica): Descargas deslizante y Cortina

 
   

Plasma Jet a presión atmosférica:
Operado con varios tipos de gases (Aire, Helio, Argón)

   

Antorcha de corte (30 A)

   
   


Trabajos recientes

Vacuum arcs

"Hydrodynamic model for a vacuum arc operated with background gas: theoretical formulation and experimental verification"; J Appl Phys ,99, 043304, 2006.

"On the plasma rotation in a straight magnetized filter of a pulsed vacuum arc";J.Phys D: Appl. Phys . 40, 401, 2007.

"Performance of a magnetic island macroparticle filter in a Ti vacuum arc"; Pl Sources, Sci &Technol, 17, 2008.

"On the dynamics of the plasma entry and guiding in a straight magnetized filter of a pulsed vacuum arc"; IEEE Trans. Pl Science PS-35, 1710, 2007.

"Ion kinetic energy distribution in a pulsed vacuum arc with a straight magnetic filter"; Physica Scripta T131, 014032 (3pp), 2008.

"Ion emission in a dc titanium cathodic arc operated with oxygen"; Physica Scripta T131, 014005 (4pp), 2008.

"Carbonnanotubes and nanofibres synthesized by CVD on nickel coatings deposited with a vacuum arc"; Journal of alloys and compounds Vol. 495, 446-449, 2010.

"Model with anomalous diffusion and friction for a vacuum-arc plasma jet in a straight magnetic filter"; IEEE Trans. Plasma Science Vol. PS-39, pp. 2014-2021, 2011.

High Pressure Non-thermal plasmas

"Discharge characteristics of plasma sheet actuators"; J.Phys D: Appl. Phys. Vol 40, pp 663-673, 2007.

"Electrical and Plasma Characteristics of a Quasi-Steady Sliding Discharge"; J.Phys D: Appl. Phys. Vol. 41, 035202 , 2008.

"Evaluation of the electron density and temperature in a sliding discharge"; Physica Scripta T131, 014001 (5pp), 2008.

"Sliding Discharge Optical Emission Characteristics"; IEEE Transactions Dielectrics Insulation, Vol. 12, Nº 2, 292-298, 2009.

"Development of a trielectrode plasma curtain at atmospheric pressure"; Applied Physics Letters 93, 031501 (3pp), 2008.

"Electrical characteristics and influence of the air-gap size in a trielectrode plasma curtain at atmospheric pressure"; J.Phys D: Appl. Phys. Vol. 42, 45205-45212, 2009.

"On the induced gas flow by a tri-electrode plasma curtain at atmospheric pressure"; Ieee transactions on industry applications Vol. 46, N ° 3, 1132-1137, 2010.

"Development of a coaxial-stacked trielectrode plasma curtain"; Ieee transactions on plasma science Vol. 39, 1466-1469, 2011.

High Pressure Thermal Plasmas

"On the Use of Sweeping Langmuir Probes in Cutting Arc Plasmas-Part I: Experimental Results"; IEEE Trans. Pl. Sci., PS-36, 263, 2008.

"On the Use of Sweeping Langmuir Probes in Cutting Arc Plasmas-Part II: Interpretation of the results"; IEEE Trans. Pla. Sci., PS-36, 271, 2008.

"On the use of the metallic nozzle of a cutting arc torch as a Langmuir probe"; Physica Scripta T131, 014026 (4pp), 2008.

"On the physical origin of the nozzle characteristic and its connection with the double-arcing phenomenon in a cutting torch"; Journal of Applied Physics Vol. 105, 13309 - 13315, 2009.

"An Interpretation of Langmuir Probe Floating Voltage Signals in a Cutting Arc"; Ieee transactions on plasma science Vol. 37, 1092-1097, 2009.

"Determination of plasma velocity from light fluctuations in a cutting torch"; Journal of applied physics Vol. 106, 53308-53312, 2009.

"On the space-charge boundary layer inside the nozzle of a cutting torch"; Journal of applied physics Vol. 105, 123303-123308, 2009.

"Schlieren technique applied to the arc temperature measurement in a high energy density cutting torch"; Journal of applied physics Vol. 107, 23304-23309, 2010.

"Departures from local thermodynamic equilibrium in cutting arc plasmas derived from electron and gas density measurements using a twowavelength quantitative schlieren technique"; Journal of applied physics, Vol. 107, 023304 (5pp) , 2010.

"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"; Journal of Applied Physics, Vol 110 083302 (6 pp) 2011.

Capillary discharge

"Formation of sub-micron size carbon structures by plasma jets emitted from a capillary discharge"; Applied surface science Vol. 255, 3558-3562, 2009.

Plasma focus device

"High energy ion beam irradiation on titanium substrate in a pulsed plasma device operating with methane"; Journal of physics - d (applied physics) Vol. 42, 205207-205215, 2009.

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