Experimental investigation of ion parameters in a cathodic arc plasma operated with nitrogen gas
The ion kinetic energy and ion density was determined for the plasma generated in the outer region of the arc channel in a pulsed low-pressure cathodic arc. The device was operated with N2 gas and with a Ti cathode within the pressure range 102 4- 150 Pa, with a peak current of 520 A. A retarding fi...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00933813_v28_n4_p1280_Grondona |
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todo:paper_00933813_v28_n4_p1280_Grondona2023-10-03T14:55:31Z Experimental investigation of ion parameters in a cathodic arc plasma operated with nitrogen gas Grondona, D. Kelly, H. Marquez, A. Minotti, F.O. Zebrowski, J. Hydrodynamic model Ion diagnostics Ion-gas interaction Vacuum arc Calorimetry Cathodes Computer simulation Electric arcs Ions Kinetic theory Nitrogen Plasma devices Titanium Vacuum Cathodic arc plasma Hydrodynamic model Ion diagnostics Ion gas interaction Vacuum arc Plasmas The ion kinetic energy and ion density was determined for the plasma generated in the outer region of the arc channel in a pulsed low-pressure cathodic arc. The device was operated with N2 gas and with a Ti cathode within the pressure range 102 4- 150 Pa, with a peak current of 520 A. A retarding field analyzer, a spherical Langmuir probe, and a calorimetric system were employed. The resulting kinetic energy for both Ti+ and Ti++ ions was 40 ±3 eV at the cathode spots. The obtained values for the ion density are in agreement with those predicted by hydrodynamic models with spherical symmetry if the ion current penetrating into the outer region is taken as 10 % of the total discharge current. It was also found that the ion density increases (and the ion kinetic energy decreases) with the filling pressure, a fact that can be attributed to an ion slowing by elastic collisions with neutrals. This behavior cannot be explained with the presence of a shock wave separating a plasma region from an unperturbed neutral gas region. © 2000 IEEE. Fil:Grondona, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Kelly, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Marquez, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Minotti, F.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00933813_v28_n4_p1280_Grondona |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Hydrodynamic model Ion diagnostics Ion-gas interaction Vacuum arc Calorimetry Cathodes Computer simulation Electric arcs Ions Kinetic theory Nitrogen Plasma devices Titanium Vacuum Cathodic arc plasma Hydrodynamic model Ion diagnostics Ion gas interaction Vacuum arc Plasmas |
| spellingShingle |
Hydrodynamic model Ion diagnostics Ion-gas interaction Vacuum arc Calorimetry Cathodes Computer simulation Electric arcs Ions Kinetic theory Nitrogen Plasma devices Titanium Vacuum Cathodic arc plasma Hydrodynamic model Ion diagnostics Ion gas interaction Vacuum arc Plasmas Grondona, D. Kelly, H. Marquez, A. Minotti, F.O. Zebrowski, J. Experimental investigation of ion parameters in a cathodic arc plasma operated with nitrogen gas |
| topic_facet |
Hydrodynamic model Ion diagnostics Ion-gas interaction Vacuum arc Calorimetry Cathodes Computer simulation Electric arcs Ions Kinetic theory Nitrogen Plasma devices Titanium Vacuum Cathodic arc plasma Hydrodynamic model Ion diagnostics Ion gas interaction Vacuum arc Plasmas |
| description |
The ion kinetic energy and ion density was determined for the plasma generated in the outer region of the arc channel in a pulsed low-pressure cathodic arc. The device was operated with N2 gas and with a Ti cathode within the pressure range 102 4- 150 Pa, with a peak current of 520 A. A retarding field analyzer, a spherical Langmuir probe, and a calorimetric system were employed. The resulting kinetic energy for both Ti+ and Ti++ ions was 40 ±3 eV at the cathode spots. The obtained values for the ion density are in agreement with those predicted by hydrodynamic models with spherical symmetry if the ion current penetrating into the outer region is taken as 10 % of the total discharge current. It was also found that the ion density increases (and the ion kinetic energy decreases) with the filling pressure, a fact that can be attributed to an ion slowing by elastic collisions with neutrals. This behavior cannot be explained with the presence of a shock wave separating a plasma region from an unperturbed neutral gas region. © 2000 IEEE. |
| format |
JOUR |
| author |
Grondona, D. Kelly, H. Marquez, A. Minotti, F.O. Zebrowski, J. |
| author_facet |
Grondona, D. Kelly, H. Marquez, A. Minotti, F.O. Zebrowski, J. |
| author_sort |
Grondona, D. |
| title |
Experimental investigation of ion parameters in a cathodic arc plasma operated with nitrogen gas |
| title_short |
Experimental investigation of ion parameters in a cathodic arc plasma operated with nitrogen gas |
| title_full |
Experimental investigation of ion parameters in a cathodic arc plasma operated with nitrogen gas |
| title_fullStr |
Experimental investigation of ion parameters in a cathodic arc plasma operated with nitrogen gas |
| title_full_unstemmed |
Experimental investigation of ion parameters in a cathodic arc plasma operated with nitrogen gas |
| title_sort |
experimental investigation of ion parameters in a cathodic arc plasma operated with nitrogen gas |
| url |
http://hdl.handle.net/20.500.12110/paper_00933813_v28_n4_p1280_Grondona |
| work_keys_str_mv |
AT grondonad experimentalinvestigationofionparametersinacathodicarcplasmaoperatedwithnitrogengas AT kellyh experimentalinvestigationofionparametersinacathodicarcplasmaoperatedwithnitrogengas AT marqueza experimentalinvestigationofionparametersinacathodicarcplasmaoperatedwithnitrogengas AT minottifo experimentalinvestigationofionparametersinacathodicarcplasmaoperatedwithnitrogengas AT zebrowskij experimentalinvestigationofionparametersinacathodicarcplasmaoperatedwithnitrogengas |
| _version_ |
1807321345739980800 |