On the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime
Low-frequency (100 Hz), intermediate-current (50 to 200 mA) glow discharges were experimentally investigated in atmospheric pressure air between blunt copper electrodes. Voltage–current characteristics and images of the discharge for different inter-electrode distances are reported. A cathode-fal...
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| Autores principales: | , , , , |
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| Formato: | Artículo publishedVersion |
| Lenguaje: | Inglés |
| Publicado: |
2016
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12272/398 |
| Aporte de: |
| id |
I68-R174-20.500.12272-398 |
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| record_format |
dspace |
| institution |
Universidad Tecnológica Nacional |
| institution_str |
I-68 |
| repository_str |
R-174 |
| collection |
RIA - Repositorio Institucional Abierto (UTN) |
| language |
Inglés |
| topic |
Physics of Plasmas |
| spellingShingle |
Physics of Plasmas Prevosto, Leandro Kelly, Héctor Mancinelli, Beatriz Chamorro, Juan Camilo Cejas, Ezequiel On the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime |
| topic_facet |
Physics of Plasmas |
| description |
Low-frequency (100 Hz), intermediate-current (50 to 200 mA) glow discharges were experimentally
investigated in atmospheric pressure air between blunt copper electrodes. Voltage–current
characteristics and images of the discharge for different inter-electrode distances are reported. A
cathode-fall voltage close to 360V and a current density at the cathode surface of about 11 A/cm2,
both independent of the discharge current, were found. The visible emissive structure of the discharge
resembles to that of a typical low-pressure glow, thus suggesting a glow-like electric field
distribution in the discharge. A kinetic model for the discharge ionization processes is also presented
with the aim of identifying the main physical processes ruling the discharge behavior. The
numerical results indicate the presence of a non-equilibrium plasma with rather high gas temperature
(above 4000 K) leading to the production of components such as NO, O, and N which are usually
absent in low-current glows. Hence, the ionization by electron-impact is replaced by
associative ionization, which is independent of the reduced electric field. This leads to a negative
current-voltage characteristic curve, in spite of the glow-like features of the discharge. On the other
hand, several estimations show that the discharge seems to be stabilized by heat conduction; being
thermally stable due to its reduced size. All the quoted results indicate that although this discharge
regime might be considered to be close to an arc, it is still a glow discharge as demonstrated by its
overall properties, supported also by the presence of thermal non-equilibrium. VC 2015
AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4907661] |
| format |
Artículo publishedVersion Artículo |
| author |
Prevosto, Leandro Kelly, Héctor Mancinelli, Beatriz Chamorro, Juan Camilo Cejas, Ezequiel |
| author_facet |
Prevosto, Leandro Kelly, Héctor Mancinelli, Beatriz Chamorro, Juan Camilo Cejas, Ezequiel |
| author_sort |
Prevosto, Leandro |
| title |
On the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime |
| title_short |
On the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime |
| title_full |
On the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime |
| title_fullStr |
On the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime |
| title_full_unstemmed |
On the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime |
| title_sort |
on the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime |
| publishDate |
2016 |
| url |
http://hdl.handle.net/20.500.12272/398 |
| work_keys_str_mv |
AT prevostoleandro onthephysicalprocessesrulinganatmosphericpressureairglowdischargeoperatinginanintermediatecurrentregime AT kellyhector onthephysicalprocessesrulinganatmosphericpressureairglowdischargeoperatinginanintermediatecurrentregime AT mancinellibeatriz onthephysicalprocessesrulinganatmosphericpressureairglowdischargeoperatinginanintermediatecurrentregime AT chamorrojuancamilo onthephysicalprocessesrulinganatmosphericpressureairglowdischargeoperatinginanintermediatecurrentregime AT cejasezequiel onthephysicalprocessesrulinganatmosphericpressureairglowdischargeoperatinginanintermediatecurrentregime |
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Repositorios |
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