Spectroscopic measurements in a titanium vacuum arc with different ambient gases

Spectral emission lines from a low pressure d-c arc discharge with a Ti cathode were studied in various ambient gases; N2, O2, and Ar. Light from the plasma was detected by an optical spectrometer multichannel analyzer (OSMA). The spectral intensities of Ti, Ti+, Ar and N2 were measured as a functio...

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Autores principales:	Grondona, Diana Elena, Kelly, Héctor Juan, Minotti, Fernando Oscar
Publicado:	2004
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01039733_v34_n4B_p1527_Grondona http://hdl.handle.net/20.500.12110/paper_01039733_v34_n4B_p1527_Grondona
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_01039733_v34_n4B_p1527_Grondona
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spelling	paper:paper_01039733_v34_n4B_p1527_Grondona2023-06-08T15:10:27Z Spectroscopic measurements in a titanium vacuum arc with different ambient gases Grondona, Diana Elena Kelly, Héctor Juan Minotti, Fernando Oscar Spectral emission lines from a low pressure d-c arc discharge with a Ti cathode were studied in various ambient gases; N2, O2, and Ar. Light from the plasma was detected by an optical spectrometer multichannel analyzer (OSMA). The spectral intensities of Ti, Ti+, Ar and N2 were measured as a function of the gas pressure in the range 5 × 10-3 - 0.5 mbar. The measurements were performed in the inter-electrode region at different distances from the cathode. For N 2 and O2 as the filling gases, the intensities of Ti and Ti+ increase with the gas pressure up to pressure values of the order of 0.2-0.4 mbar, while they decrease for higher pressure values. With Ar gas, a different behavior of the Ti+ intensity was found; it presents an increasing general trend. The behavior of the lines was qualitatively analyzed in terms of the most relevant atomic processes that take place in the metallic plasma - gas structure (charge-exchange, electron impact excitation and ionization, etc.). It is found that the behavior of the observed spectral lines can be satisfactorily explained in terms of the relevance of these processes as functions of the neutral gas density and electron temperature. 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:Minotti, F.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01039733_v34_n4B_p1527_Grondona http://hdl.handle.net/20.500.12110/paper_01039733_v34_n4B_p1527_Grondona
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description	Spectral emission lines from a low pressure d-c arc discharge with a Ti cathode were studied in various ambient gases; N2, O2, and Ar. Light from the plasma was detected by an optical spectrometer multichannel analyzer (OSMA). The spectral intensities of Ti, Ti+, Ar and N2 were measured as a function of the gas pressure in the range 5 × 10-3 - 0.5 mbar. The measurements were performed in the inter-electrode region at different distances from the cathode. For N 2 and O2 as the filling gases, the intensities of Ti and Ti+ increase with the gas pressure up to pressure values of the order of 0.2-0.4 mbar, while they decrease for higher pressure values. With Ar gas, a different behavior of the Ti+ intensity was found; it presents an increasing general trend. The behavior of the lines was qualitatively analyzed in terms of the most relevant atomic processes that take place in the metallic plasma - gas structure (charge-exchange, electron impact excitation and ionization, etc.). It is found that the behavior of the observed spectral lines can be satisfactorily explained in terms of the relevance of these processes as functions of the neutral gas density and electron temperature.
author	Grondona, Diana Elena Kelly, Héctor Juan Minotti, Fernando Oscar
spellingShingle	Grondona, Diana Elena Kelly, Héctor Juan Minotti, Fernando Oscar Spectroscopic measurements in a titanium vacuum arc with different ambient gases
author_facet	Grondona, Diana Elena Kelly, Héctor Juan Minotti, Fernando Oscar
author_sort	Grondona, Diana Elena
title	Spectroscopic measurements in a titanium vacuum arc with different ambient gases
title_short	Spectroscopic measurements in a titanium vacuum arc with different ambient gases
title_full	Spectroscopic measurements in a titanium vacuum arc with different ambient gases
title_fullStr	Spectroscopic measurements in a titanium vacuum arc with different ambient gases
title_full_unstemmed	Spectroscopic measurements in a titanium vacuum arc with different ambient gases
title_sort	spectroscopic measurements in a titanium vacuum arc with different ambient gases
publishDate	2004
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01039733_v34_n4B_p1527_Grondona http://hdl.handle.net/20.500.12110/paper_01039733_v34_n4B_p1527_Grondona
work_keys_str_mv	AT grondonadianaelena spectroscopicmeasurementsinatitaniumvacuumarcwithdifferentambientgases AT kellyhectorjuan spectroscopicmeasurementsinatitaniumvacuumarcwithdifferentambientgases AT minottifernandooscar spectroscopicmeasurementsinatitaniumvacuumarcwithdifferentambientgases
_version_	1768544126257594368

Spectroscopic measurements in a titanium vacuum arc with different ambient gases

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